Disclaimer: I don't own Inuyasha or any of the publicly known characters, plot, etc. I'm just renting them from Rumiko Takahashi, Viz, etc. I do own the plot of this story and any original characters I've created. I will make no money from this fic; I write for my own enjoyment and the enjoyment of my readers.

A/N – My first dedicated comedy, an oldie but a goodie, so to speak. Written in 2009 and lightly edited in 2015. This story features under-age drinking (legal age in Japan is 20), so consider yourself warned. Rated for bad language and sexually-related material (nothing explicit).

Awards:

1st Place Best Comedy – Inuyasha FanGuild, 1st Quarter 2009

2nd Place Best Humorous Fiction – Feudal Association, March 2009

Erectile Dysinformation

Sometimes Inuyasha wondered how he got himself into these situations. Well, this time it was more like Kagome had gotten him into it. Her friend Eri was hosting an "end of summer" par-tee, something which the wench explained was like the festivals humans attended in his time. In some aspects, it was. The main activities were talking and dancing. Fortunately, Kagome was content to only partake in the former, as he had no idea how to dance. They mingled for a while, or rather, Kagome mingled. He did his best to stick close to her and impress upon any interested males that she was taken. Now they were lounging on the couch, she nestled securely into his side with his arm looped around her shoulders, chatting amicably to some girl he had never met. Apparently she was a classmate or something. He didn't really care; he was just glad Kagome was having a good time.

Personally, he couldn't wait until they left, for several reasons. The first was that Kagome had promised him a 'special reward' to convince him to come. He smirked; he had become quite fond of her 'special rewards' since their first night together over five months ago. They certainly weren't the nervous virgins they used to be; his nearly insatiable appetite for her had seen to that. But then, he rarely had to put much effort into convincing her to join him in a tryst. Sometimes she initiated the encounters herself, and he always found it incredibly sexy when she did. So yes, he was dying to get the hell out of this crowded house so he could get Kagome alone. And naked…

But there were other reasons he wanted out as well. For example, the ungodly music blasting through the first floor. For once, he was glad he had to wear his stupid hat; the fabric at least muffled the sound somewhat. And then there was the alcohol. When it was offered to her, Kagome respectfully refused for the both of them, and for that he was grateful. It would impair his ability to keep an eye on her, and he just didn't feel comfortable drinking in the company of strangers. Later, Kagome told him that by drinking, most of these kids were doing something 'elleegal,' meaning they could get into big trouble with something called the 'pole-eese.' Apparently, you had to be twenty years old before you were allowed to drink in this strange time.

Now mind you, he didn't give a rat's ass what the other kids did. The thing about the alcohol that bothered him was the smell. Specifically, it was the smell of what Kagome euphemistically referred to as 'beer breath.' Feh! More like a bunch of stinking humans who can't belch with their mouths closed! Still, he couldn't say he regretted accompanying Kagome to the party. With the ongoing quest to restore the Shikon no Tama, she didn't get to go out with her friends much.

"You wan' some'm tu drink, K'ome?" Yuka slurred, stumbling up to the couch. Kagome frowned, having never seen any of her friends wasted before.

"Sit down, Yuka," she said, pulling gently on the girl's arm. "Where's your boyfriend? Maybe he should take you home."

"Nonsense, K'ome! Eri tol' us we could crash here."

"Well, then maybe you should lie down." At this, Yuka glowered down at Kagome, the effect dampened by the unintentional crossing of her eyes.

"Kagome, I do have some tolerance for alcohol, you know."

The miko blinked; now Yuka appeared almost sober. She must be just a little tipsy, I guess…

"Okay, well then I'll just have water."

"Water! Come on, Kagome! You're so boring! How does Inuyasha put up with you?" she joked, motioning to him. For the first time, Inuyasha joined the conversation.

"Trust me; Kagome is a lot of things, but she definitely isn't boring," he replied, waggling his eyebrows at her suggestively. Her face heated and she elbowed him in the side, earning her a gratified grin. He loved the fact that he could still make her blush even after all the times they'd been together. In her inebriated state, Yuka fortunately didn't get the inside joke.

"You need anything, Yash?"

"Yeah. I need you three bitches to stop calling me 'Yash!'" Yuka just giggled, turning to go get Kagome's water. Inuyasha shook his head. When his relationship with Kagome had progressed beyond the 'does she love me, do I love her' stage, he had naturally become more familiar with her friends. They saw them practically every time they returned to the modern era, and the girls had accepted his nickname for them, namely 'you three bitches.' Kagome didn't like it, but hey, they had started calling him 'Yash' first!

Kagome suddenly stood, startling him out of his musings as he grabbed her wrist to get her attention.

"Where the hell do you think you're going, wench?" he demanded, his tone playful.

"I changed my mind. I'd rather have something besides water, maybe something with fruit in it."

Standing, Inuyasha gently pushed her back down on the couch. "I'll get it. You stay here."

And before she could protest, he was gone, weaving his way through the crowd in a way which only someone with youkai blood could manage. And he still got bumped, jostled, and groped by a few drunk kids. No, there was no way he was letting Kagome move away from that couch unless he was with her. She was the most beautiful girl in the place, and there seemed to be quite a few wandering hands among the dancing teens. Finally he reached the kitchen, where Yuka was busy preparing two fruity-smelling drinks.

"Oi," he said, startling her. She jumped and spun around, hiding something behind her back in the process. She plastered on a fake smile and he raised an eyebrow at her, but let her odd behavior go without comment. Whatever she was doing, it wasn't his business.

"What's up, Yash?"

"Kagome said she wanted something instead of water, something 'fruity' if you have it."

"Oh, well I was just making some fruit smoothies for me and Akira. I could make her one without alcohol. You want one?" Inuyasha considered, subtly scenting the two already prepared drinks. They smelled good, almost like strawberries if you took away the alcohol.

He nodded. "Without alcohol."

"Oh, sure, don't say 'thank you' or anything."

"Feh." Then, he exited the room, probably to return to Kagome's side. Yuka sighed in relief and started preparing the two non-alcoholic smoothies. Inuyasha was rude and crass, but she could tell that he really did care about Kagome. And from what Kagome reluctantly confessed one night after much prodding, he was a real 'demon in the sack.' Yuka couldn't help her jealousy. Eighteen years old and already she's found the perfect boyfriend… Now, her own boyfriend was nothing to complain about. She really liked Akira. He was smart, funny, basically everything she looked for in a man. But he had…problems in bed, which was why she was currently slipping ED drugs into his drink. With the scintillating moves they had been putting on each other on the dance floor, her body was already revved up and ready to go. She wanted sex tonight, and Akira would need a kick-start, especially since he wasn't completely sober. But she didn't want to risk emasculating him or hurting his feelings, so this was the only way to guarantee a satisfying conclusion to their evening. Sighing, she ground the little blue pill into powder and dumped the contents into his glass. Placing all four drinks on a tray, she turned and left to deliver them, not realizing that she had left the bottle of pills perched perilously on the countertop. After delivering Inuyasha and Kagome's drinks, she went off to find Akira and lure him upstairs.

Inuyasha wrinkled his nose as he took a sip of his smoothie. Damn…I thought I told that bitch no alcohol! Sniffing, he shrugged. The actual amount of alcohol would be inconsequential to him, and he couldn't detect any in Kagome's drink. So there was really no harm done, and Yuka was forgiven. Glancing lazily at the clock, he saw that it was almost nine o'clock. Kagome had said they would probably leave by ten, so that meant it was only another hour before he could get his 'special reward!' He sent a mental thank you to Souta for teaching him how to tell time.

It was some time later, when he had downed over half his drink, that Inuyasha started to feel a bit…funny. A familiar stirring in his loins had him crossing an ankle over his opposite knee as he subtly adjusted himself within the restrictive confines of the cursed jeans Kagome made him wear. Getting an erection was nothing unusual for him, especially with the wench around, and at first he thought that his body was just anticipating the promised events of later that evening. But then the stupid thing wouldn't go away. Never before had thinking of either his brother, Kouga, or Naraku—and how he hated their collective guts—failed to make his eager shaft wilt like a dying plant. They didn't even have to be naked or doing anything nasty; he found that simply bringing any of them to mind always did the trick.

Until tonight, that is. What the fuck?! What's wrong with me? Inuyasha felt no genuine panic, but after a solid twenty minutes of futily trying to get rid of his problem, he did start to get a little worried. Nothing like this had ever happened before. He worked hard to maintain control of his body, because when he lost control bad things happened. There was little chance of his penis going berserk and slaughtering anyone, but it still bothered him that it wasn't obeying his commands. Perhaps someone had placed a spell on him? But who would have done such a thing? Maybe…Kagome? He quickly scratched that idea. The wench wasn't one to use underhanded tactics like that when it came to sex. Besides, most of the time she didn't have to do anything to put him in this state. A deep sniff of that delectable scent of hers never failed to get him going. The difference between this time and every other time was that previously he had always been able to calm himself if circumstances didn't allow him to just up and carry her off to a more private location. Something was definitely wrong; his instincts were telling him as much, and over the years he had learned to trust them without question.

But what could have rendered him unable to go soft? Was it something he ate? Mrs. Higurashi's cooking had certainly never done that before! Frowning, he reached down to the table and grabbed his glass, sipping the last of his smoothie. He suddenly sat straight up, spitting the liquid back into the glass as the obvious thought occurred to him. Wasting no time, he stuck his nose as far as he could into the glass and sniffed for all he was worth. Strawberry…water…alcohol…THERE! Barely detectable, even though he was concentrating so hard, was the scent of something strange, but there was no doubt it was there. It smelled medicinal, similar to those ass-per-in or tie-le-naul pills Kagome sometimes took for headaches. And there was little doubt now that this medicine, which had somehow found its way into his drink, was responsible for his current condition.

A sharp elbow into his side broke him from his musings, as he removed his snout from the glass and glanced to his left. Kagome was glaring at him, her expression asking loud and clear, 'what the hell are you doing?!' Several people in the area were staring at him, clearly wondering the same thing. But he didn't have time to be embarrassed. Mumbling something about going to the bathroom, he rose from the couch and proceeded through the mass of dancing humans once again. When he knew he was out of Kagome's line of vision, he swerved toward the kitchen. He was glad to find it empty when he arrived; sniffing around would be a whole lot easier without worrying about trying to be subtle. He had the scent now, and put his nose to work with enthusiasm. Soon enough, he tracked the subtle aroma to an innocent-looking white bottle on the countertop. Picking it up, he examined it closely, then just as quickly gave up the attempt with a frustrated growl. Unfortunately, his mother had passed away before she could finish teaching him how to read. She taught him the basics, but that was so long ago. And some of the kanji were very strange indeed, grouped together horizontally instead of vertically.

At any rate, there was no way he was going to be deciphering the words on the bottle anytime soon. He could, however, at least verify that this was in fact the right bottle. Pulling the top didn't work, and when he turned it all he got was an annoying ratcheting sound. But eventually he figured out that you had to push the top and turn it, though that discovery came only as he was about to smash the stupid thing open. And there they were. Little blue pills, bearing the same medicinal scent which lingered on both the outside of the bottle and the inside of his glass.

So now he had solved one mystery, but this just led to more questions. Was this medicine designed to give men erections, or was it meant for an entirely different purpose? Had it caused a strange reaction in him because he was a hanyou? It wouldn't be that surprising; ink and all kinds of things that didn't bother humans affected him dramatically. Most importantly, how in the hell had such a pill ended up in his drink?! Inuyasha leaned against the counter as he reflected on the events of the past hour—Yuka preparing two alcoholic smoothies for her and her boyfriend, her embarrassment at being caught doing…something, how she made two supposedly non-alcoholic smoothies for him and Kagome…

As he considered the potential answers to his question, two principle possibilities came to mind. First, Yuka had intentionally drugged him. That idea was fairly easy to dismiss, as he didn't think the girl was so deceitful. And why would she need to slip him any kind of medicine? As far as he knew, there wasn't anything seriously wrong with him, and he certainly didn't need help satisfying his woman. The second possibility was more believable, that Yuka had given him the drug through an unfortunate blunder. After a few more seconds of contemplation, he settled on the correct version of events. She didn't accidently put alcohol in my drink. She put the pill in her boyfriend's drink and gave it to me by mistake! Baka!

Now everything seemed to indicate that the pills were made to help men become and stay aroused. The entire dance floor reeked of arousal, and it wouldn't be much of a stretch to assume that Yuka wanted to be intimate with Akira that evening. But apparently the boy wasn't 'up' for it, so Yuka decided to secretly stick a penis pill in his drink. All of that made perfect sense to Inuyasha, but he still couldn't be sure. The possibility remained that the pill was completely innocent, and he was just having an abnormal reaction to it. And the only way to find out which scenario was actually true would be to (gulp) ask someone about it.

But who could he ask? The best idea would probably be to just ask Kagome, but he tanked that thought. This seemed like the sort of thing you should ask a fellow male about. He grimaced; his choice in modern men was pretty limited. He didn't even consider Kagome's grandfather. The old man would make assumptions without letting him explain, and he'd end up with hundreds of useless sutras stuck to him. He and Kagome had been very careful to keep their newfound intimacy from her family. He was fairly certain that her mother knew, and approved or at least accepted it. He was equally sure that Kagome's grandfather and brother remained in the dark, and he didn't particularly want to turn the light on for them tonight. But Souta was the only person he hadn't eliminated, so the kid would have to do. He would just have to get his question answered without throwing the fact that he was banging the kid's sister in his face.

Decision made, he glanced at the clock. It was now almost ten, and he'd been in the kitchen long enough. Fortunately, Kagome either hadn't noticed how much time had passed or thought he was having trouble in the bathroom, because she made no comment when he returned to her side. He growled darkly, catching a very unwelcome scent emanating from the couch he was sitting on.

"Wench!" he whispered in her ear, causing her to break off her conversation with whoever she was chatting with.

"Yeah?"

"You let that little shit sit here?!"

"Don't call him that," Kagome ordered sternly. "Hojo-kun just wanted to say hi."

"Feh. Good thing. If he asked you out again I'd have to break him in half."

Kagome simply rolled her eyes and went back to her talking. Inuyasha took to muttering under his breath, entertaining dark thoughts concerning maiming the modern boy who probably still harbored desires for his woman, even though Kagome had informed him in no uncertain terms that she wasn't interested. Coward…swooping in when he thinks I'm on the crapper…maybe I should slice him into pieces. As a matter of principle…

Kagome forestalled any thoughts of actually carrying out his mental threats by standing and stretching. He experienced a little blip down below at the sight of her shirt rising up slightly to reveal her navel. As if he really needed anything else exciting him at the moment.

"You ready to go, Inuyasha?"

He nodded, shoving his hand in his pockets as he stood in that classic modern technique for erection concealment. His right hand wound its way around Kagome's waist as she said goodbye to her friends, and then he led her out the door and into the cool night. She sighed contentedly, snuggling into his side and leaning her head on his shoulder.

"Thank you for coming, Inuyasha. I had a really good time tonight."

Inuyasha smiled despite himself; let no one say he didn't like seeing the wench happy. On a normal night, a slightly hentai remark reminding her of her promise would be on the tip of his tongue, but not tonight. Not when he wasn't sure exactly why he'd had a raging hard-on for almost an hour. Not when his instincts were telling him something was wrong, and he wasn't certain what that damn pill was supposed to do or what else it could do. As strange as it sounded, he hoped Kagome forgot about her promise, at least until he had a chance to talk to her brother.

And it seemed that it truly had slipped her mind, for she changed into her pajamas and sat down to watch some TV downstairs. That was fine with Inuyasha; he had a runt to interrogate. Souta was still up since school was on break, though his bedtime was fast approaching when Inuyasha entered his room unannounced and shut the door behind him. The eleven-year-old was perplexed, though definitely not unhappy to find his hero in his room. He did, however, wonder why the hanyou looked so nervous.

"What's up, Inu-no-niichan?"

"Shut up, kid. I need you to read something for me."

A little put off by Inuyasha's crassness, Souta decided to have a little fun with him. "But…how am I supposed to read something to you if you told me to shut up?"

Grrrrr. "Just read the damn thing!" Inuyasha yelled, tossing Souta the bottle of pills he pilfered from Eri's counter. The boy's eyes widened as he read the label. Now, Souta was no expert on sex, but he had seen enough commercials on TV to know what these pills were, and he was worldly enough to know what they were for. A million questions raced through his mind. Why did Inuyasha need these? Were he and Kagome intimately involved? He filed that under 'things I don't need to know about my sister.'

"Y-you need these, Inu-no-niichan?"

"Feh. Hell no! Kagome's baka friend accidentally put one in my drink. I want to know what the hell it is! So read the damn bottle already!"

Souta sighed in relief. If Inuyasha and Kagome's relationship had progressed to the point where they were having sex, then he was happy for them. But he didn't need to know!

"Well, this is a drug for erectile dysfunction. It helps men get…hard. Uh…"

"Yeah, yeah, I figured that out on my own. When does it wear off?"

"Wear off? Well, it's not supposed to…work until you're…ready…"

Inuyasha spared the embarrassed kid any further elaboration, having understood the jist of Souta's words. The drug was only supposed to give you an erection when you were aroused; it wasn't supposed to make you solid as stone when you weren't about to have sex. Damn! I knew something was wrong!

"What does it say about if the…condition is persistent?"

Finally, the humor of the whole situation dawned on Souta. Inuyasha had taken an ED drug by accident, found that he couldn't get rid of his erection, and now was asking a little kid for advice on how to solve the problem. He might have laughed if Inuyasha didn't seem to think the situation was so serious. But that gave him another idea, and he barely held back a devious smirk. He had wanted to have a little fun with Inuyasha, right? Oh, man! How am I supposed to say this with a straight face? Somehow, he managed.

"Well, it says here that if you experience an erection lasting more than four hours…it falls off."

A choked sputter was Inuyasha's only reply. He couldn't have heard correctly, could he? Souta couldn't possibly have just said that his dick would fall off if he couldn't get it to soften, right? But his hearing was sharp and almost never lied. Still, he had to be sure.

"F-falls off?"

Continuing his Oscar-worthy performance, Souta nodded grimly. "When did you take the pill?"

"Around n-n-nine."

"Well," Souta stated miserably, glancing at the clock, which read almost ten-thirty. "I'd say you have about two and a half hours to fix your problem. Otherwise, I'm going to have to start calling you Inu-no-neechan."

Inuyasha's eyes widened in horror as the gravity of the situation truly set in, then he turned and bolted out the door. Souta managed to hold in his laughter for a few seconds, but then it poured from him in waves. The thought of Inuyasha going crazy for a couple hours, thinking that he was going to lose his manhood, brought tears of mirth to his eyes. He could imagine the hanyou yelling at his cock, cursing it, begging it…

It took Souta several minutes to reign in his giggles. Did he feel a little guilty? Yeah, but what harm could come of it? It wasn't as if Inuyasha's dick was really about to fall off. If there was going to be physical harm, it would be inflicted upon him by said hanyou. Yep, he had a little more than two hours before Inuyasha discovered his ruse and returned to chop him into sushi. But he would greatly enjoy the trick in the meantime. What Souta didn't know, however, was that Inuyasha had a tried and true method to make himself flaccid, involving his willing girlfriend, who just happened to be the brat's big sister.

"Inuyasha! Where are we going?!" Kagome called over the wind whistling through her hair. Inuyasha ignored her, focusing instead on making his way through the feudal countryside as quickly as possible. He knew the perfect place to take his woman, in both senses of the word. Reaching the deserted hut he had discovered far from the village, he set Kagome on her feet and spun her to face him.

"Inuyasha, why are we—oh…" she trailed off as she found herself pressed up against her lover's hard male body. His hands were on her ass, gently massaging as he held her close, the evidence of his arousal pressing teasingly into her belly. Her eyes fluttered shut as a familiar heat burgeoned within her, causing her to gyrate her hips in time with his movements.

"Did you forget your promise to me, wench?" he rasped huskily into her ear, causing her to shudder involuntarily.

"Y-you know, you could have just asked," she replied weakly, knees already wobbling from anticipation. His dark chuckle nearly turned them to jelly.

"Yeah, but stealing you away is more fun." He nipped her sensitive lobe, sending a bolt of pleasure straight to her toes. Unable to stand it anymore, Kagome pulled him in for the first of many searing kisses.

*** Two Hours Later ***

"Inuyasha, please! No more! I can't—I can't do it anymore!"

Inuyasha grimaced; after several love-making sessions and countless orgasms, Kagome had finally reached her limit. Normally, he would be content to stop and cuddle long before this point, but his erection had remained constant no matter how many times he found release. Rolling off the futon, he groped for the small timepiece he had snatched off Souta's bureau on his way out. His time—or rather, his manhood's time—was nearly up. Shit! I only have twelve minutes! Growing desperate, he mustered up his most sultry voice, the one that always turned Kagome into a puddle of needy goo.

"Come on, baby…one more time," he begged, running his claws along her belly. She shivered, but still pushed him away.

"Inuyasha, please. I already won't be able to walk in the morning. If we do it any more I won't be able to walk ever again!"

A small part of Inuyasha was gratified by her statement, but most of him was terrified of what would come to pass in twelve—eleven minutes.

"Dammit, wench!" he cried, the panic evident in his voice. "This is important!"

"Why? What's wrong?" she asked with genuine concern.

"N-nothing!" he replied, reaching for her. But she rolled away, keeping him at arm's length.

"Nuh-uh, mister. You keep your hands to yourself until you tell me what's really going on."

Inuyasha heaved a heavy sigh, an admission of defeat if Kagome had ever heard one. He grabbed his discarded jeans, pulling the bottle that had started this whole mess out of the pocket and tossing it to her. She examined it quizzically, then turned surprised eyes on him. Well, at least this explains why 'little Inuyasha' has been so relentless tonight…

"You took one of these?"

"Keh! Not on purpose! I think Yuka accidentally put one in my drink."

"But why would she do that?"

"It was probably meant for Akira."

At this, Kagome's expression morphed into a classic 'Oh'-face—to be distinguished from her Oh!-face, which he had already seen many times that evening.

"So what's the big deal?" she asked, shrugging her shoulders nonchalantly.

"Wh—what's the big deal?!" Inuyasha repeated incredulously. "Read the fuckin' bottle, wench!"

"I am reading the bottle! I don't see what you're so worried about!"

"Read what it says will happen if you have an erection for four hours!"

"If you experience an erection lasting more than four hours, you should see a physician."

Inuyasha gaped, his whole body frozen stiff. Now he really must be hearing things…

"Read that again, wench."

"If you experience an erection lasting more than four hours, you should see a physician."

Inuyasha's eyes narrowed dangerously. "You're sure that's what it says?"

"Yes, I'm sure! Now what's wrong?!"

But Inuyasha was no longer there; in his mind, he was back in the Higurashi household bashing Souta's head in with the butt end of Tetsusaiga.

"damnsonofamotherfuckingassholejackasspieceofshi—"

"INUYASHA!"

Once Kagome had his undivided attention, she continued in a much softer voice. "Now, for the last time, what is the matter?" To her surprise, Inuyasha blushed hotly at the question. Now she had to know what was bothering him. But before she could restate her inquiry, he leapt to his feet and started sliding on his pants.

"Get dressed, wench."

"Where are we going?"

"To make you an only child!"

"Wh—oh, what did Souta do?"

"That little brat told me those pills would make my dick would fall off if I had an erection for four hours!"

If Inuyasha expected a coherent response from Kagome, he didn't get one. Instead, he had to watch as his girlfriend rolled around on the floor laughing at his expense. Huffing, he went outside to sit in the cold. Eventually, Kagome dressed and made her way to join him, still giggling.

"I'm sorry, Inuyasha, but you have to admit that was a great prank."

"Yeah, it was real fucking hilarious, wench," he bit out sarcastically.

"Oh, come on. Lighten up! Kids his age play tricks all the time."

"Keh. I'm still gonna pound him."

"You won't hurt him," Kagome replied calmly and assuredly. She yawned, her eyelids drooping. Shaking his head, Inuyasha turned and offered her his back. She gratefully accepted the ride, and was asleep within a few minutes. For Inuyasha, the trek back to the well was consumed with thoughts of payback and revenge. The wench was right; he could never hurt Souta. The kid wasn't a hard-headed demon like Shippou, for one thing. But that didn't mean the brat was getting off scot-free. No, he would have his payback, and it would be every bit as good as Souta's prank.

In retrospect, he supposed it had been a little funny…

A/N –

(1) I realize this story takes a very western approach to the whole party scene, but that's all I have to go on. I gathered some interesting information from various internet sources. First, drinking is fairly prevalent in Japan, and about 70-75% of alcohol consumed is beer. Underage drinking is fairly common as well, since law enforcement of the age limit is somewhat lax. I do not know if they serve fruit smoothies in Japan.

(2) I also found out that the Japanese do use ED drugs. The market is in fact dominated by Viagra and Levitra. But because of a stigma associated with erectile dysfunction, the sales are not what the American pharmaceutical companies hoped for.

(3) Earlier, Souta addresses Inuyasha in his customary manner: as "Dog Brother." Here, he's saying he might have to start calling Inuyasha "Dog Sister."