A/N: This took a while to finish coz I had to re-choose and rewrite the prompt several times. Plus I had procrastination as a best friend for the last couple of months. However, I added more fuel to the fire in this. I hope you enjoy! *cackles*

Based on the prompt line: "You came into my room drunk, thinking it was yours."

Disclaimer: I don't own Gintama. The Gorilla was reborn and became the ultimate ape.

o-o

"Damn it."

Soyo never liked to cuss out loud, however, she wanted nothing more but to express every foul word she'd learned over the course of her entire lifetime. Courtesy of her best friend who constantly seemed to have a wide ammunition of coarse language that it never failed Soyo to feel amused at how vulgar her bestie could be sometimes. A habit she tried to consistently quench out of the other girl's system, but continually failed.

Though, now Soyo understood why Kagura constantly used such terms whenever she was pissed off. Because no other expression could ever belly the kind of frustration she was feeling right now. She wanted nothing more than to evaporate into thin air and never materialize ever again.

It was horrible.

Waking up in somebody else's room, without any memory of how she stumbled inside it, was one thing. But waking up in somebody else's room and bed, and wearing said person's oversized shirt, was another. And honestly, it was something she would rather not try to comprehend as of the moment especially when it felt like a sledge hammer was pounding her head constantly. Who ever said morning hangovers were brilliant?

Drinking? Yes. Hangover? Hell no.

She snorted, then moaned when another surge of nausea threatened to overcome her. That was another reason why she didn't like drinking too much. For the life of her, Soyo could never truly hold her liquor together. But last night's activity was too much of a blur for her fogged up mind. All she could remember was the happiness and excitement of finally finishing all her school projects; then several invitations of drinking, in-between bouts of karaoke, and delicious meals of sushi and horumon.

Overall, Soyo thought, it was a great and fun night. Except now, when she tried to prop herself groggily on her forearms and surveyed the foreign room, a slow sense of foreboding tightened at the pit of her stomach. A few things had finally registered: 1) the place was a complete mess. Clothes were randomly sprawled all over the room, with a few cup ramen noodles piled up in my corner, and a set of unwashed dishes cluttered on the kitchen sink. 2) The said clothes were clearly masculine. No scratch that, the whole room was oozing in masculinity. From the worn out gray working suit hanging on one side of the room, down to the rabbit-printed white boxers she could see lying at the foot of the bed.

She tried not to laugh at how cute it was. Her stomach was still churning from deep within and she didn't want to release whatever's inside it just yet. Remembering that her brother also had his own fair share of cute-printed designs; she smiled at the thought. It had been a while since she last spoke to him and sighed.

Fully lifting herself up while sitting at the edge of the bed, Soyo inhaled deeply and shook her head to try to clear the headache against her temple, when another realization suddenly hit her with a vengeance. She was wearing an oversized t-shirt that barely managed to reach her knees, inside an unknown man's room, and nothing underneath it.

Her eyes widen in terror and then froze, when a sudden rustling of keys caught her attention, followed by the turn of a doorknob being open. Cursing aloud, she immediately clutched the bed's covers as if it was a shield that could protect her from the unknown danger coming at her.

Seeing a shadow from the room's hallway, Soyo screamed at the top of her lungs.

Kamui's first reaction to the ear-splitting scream was to rush inside the room, then simultaneously dodge a large pillow and several pieces of clothing thrown his way. Scowling, he turned his attention to the woman sitting on the edge of his bed, while clutching its covers like some sort of shield that's tightly wrapped around her body. At another given time, he would have found her current position tempting.

Her body was completely flushed from head to foot. With her long black raven hair shaping her soft cheeks and parted pink lips looking so lush, Kamui would probably toss aside the heavy grocery bag he was holding on his left hand and appease the distressed lady. But the keyword would be 'probably'.

Shaking his head, his mind pushed out such wayward thoughts, then walked towards a nearby table and dropped the grocery bag unceremoniously which made the woman flinched. Great, he was making her feel even more nervous.

He could feel the woman's anxious gaze following his every move as he shrugged out of his old brown winter coat and hung it beside his gray suit. Reaching down to remove his dirty boots, which he forgot to do earlier due to the sudden uproar, a voice stopped him in mid-action.

"E-excuse me…" the woman called out. "B-but how did I get here?"

Kamui straightened and stared at her quizzically. He pondered whether he should lie to her just to get back at what she'd done to him earlier, or to just say the blunt truth. He decided to go with the latter. He was already dead tired and didn't have the energy to come up with any decent lie.

"You came into my room drunk, thinking it was yours," he replied matter-of-factly, while removing his boots. When his gaze met her hazel ones, amusement danced at the depths of his piercing blue eyes while a smile tugged at the corner of his lips. "Or rather, you were like a staggering duck who thought she owned the place. It was rather…. comical."

Kamui's memory recalled how the sound of fumbling keys and doorknob twisting sounds caught his attention after finishing his bath last night. Curious, he walked over to his doorway not minding he was only wearing a pair of gray sweatpants and a white towel carelessly slung over his shoulder. As he walked closer, he heard a muffled voice of someone scolding the door which he thought was odd.

Opening the door slowly, Kamui was surprised to see a woman who looked like she was possessed. Her hands were outstretched in front of her, shaking repeatedly, like she was in some kind of crazy ritual while her head was slightly thrown back.

"….Yuuteimiyaouki Mukou Pepepepepepepepepepepepe Oato ga Yoroshii you de Kore Nite Oshimai Bichiguso Maru!" she chanted loudly.

Kamui unconsciously stepped back a little and gaped at the crazy woman finished. Then he saw her grinned goofily at him.

"It opened! I knew Open Sesame wasn't the right magic woooooord!"

The last part of her statement was a bit slurred which informed Kamui that the crazy woman was drunk. That, and her goofy grin, and staggering posture. Staring intently at her, recognition finally dawned on him. She was the woman from a few nights back who allowed him to use her room's bathroom when he had problems with it.

What was she doing in front of his room apartment? Did she want to use his bathroom too?

While his mind was still trying to decipher whatever reason she had for standing in front of his door, a loud ecstatic squeal filtered through his attention. Kamui stared as the raven-haired woman clapped her hands and smiled widely at him.

"It's yoooooooouuuuuuu!" she drawled happily. "The good-looking man with the nice aaaaaaaassss! What are youuuuu doing heeeerrrreee?" She hiccupped, then swayed a little.

He tried not to choke on laughter at having a 'nice ass', but smirked at being called good-looking. Women did find him attractive, and most often than warranted, tried to catch his attention while he was at work. Though he found those types of women shallow and boring, his male vanity still preened at the attention. Still gloating at himself, Kamui didn't realize she already barged inside while giggling like an idiot.

"Hey! Wait a minute, Miss!" He tried to call her attention but failed because the woman was too drunk to pay attention to him. Getting annoyed, he caught her wrist and spun her around to try and take her outside his apartment. "I said, wait a minute, dammit!"

He froze when suddenly her arms wrapped around his neck and her fingers slowly buried themselves on his hair. Holding his breath, he gaped at the smiling woman in his arms.

"Your hair's so smooth," she whispered. "I've never seen such beautiful hair before."

Kamui didn't know what possessed him to slowly lower down his head and had the impulse to suddenly take possession of her soft pink lips. It must be the way her hazel eyes stared at his own, or the way her parted lips looked so invitingly the urged was just overwhelming, or maybe, it was the way her fingers softly toyed with his vermilion hair. He didn't understand why but all he knew was that she somewhat fitted perfectly against his body. And he liked it.

His lips lightly grazed against hers and he heard her small intake of breath. Smirking, he pressed his lips once more, adding more pressure, while his hands slowly wrapped around her small waist and pulled her soft warm body closer to his. He could taste the bitterness of alcohol in her slightly parted mouth when his tongue decided to probe inside it, but a sudden overwhelming taste of sweetness inflamed his senses. The small gasp that escaped from her made something snap inside Kamui.

This is wrong. Somewhere at the back of his mind, a small voice nagged at him. Where that certain voice came from, he didn't have a clue but he never listened to it anyway. Slowly, Kamui unzipped her brown winter jacket off and his hands felt the soft fabric of a white cashmere sweater. His lips trailed kisses down her cheeks and jawline, and nibbled her right earlobe.

Somewhere in between kisses, Kamui couldn't recall how he'd managed to barely avoid getting puked all over his body. But the moment he heard a sharp intake of breath, followed by a sudden heaving sound, his body's reflexes immediately pulled him out of the direct trajectory of heaven's garbage.

"God damn it," he cursed aloud. Raking his hands in frustration through his slightly damped vermillion hair, he scowled at the groaning and staggering woman in front of him. What the hell just happened? Did he just suddenly lost himself to kissing an unknown woman? A drunk woman to be exact.

A drunk woman who suddenly barged into his apartment room without invitation and who almost puked on him. A woman who tasted like dark chocolates he liked eating so much and couldn't get enough of. Damn, this was bad. And it couldn't get any worse, he thought.

Kamui noticed her knees going weak, and before her body could fall completely on the floor, he caught the now unconscious woman in his arms. Grimacing at the awful stench of vomit, he lifted her limp body and carried her to the bathroom. He needed to remove her dirty clothes off then clean the retched puddle of puke in his living room. There was no way he'd put her on his bad covering in this nasty slime.

That train of thought suddenly stopped him midway. He'd need to remove her clothes himself, and put her on his bed. If it was another kind of woman, he'd just casually throw her out of his apartment or just do his way with her - unconscious or not. But staring at the slightly pale, innocent-looking, woman in his arms, he steeled himself with the annoying task. He was not a devourer of virgins, contrary to Abuto's belief that he was completely heartless. Heaving an exasperated sigh, he entered the bathroom with unwanted trepidation.

All of those memories passed through his mind's eye, like he was some kind of audience to prank show slowly unleashed in front of him. He smiled with rancor.

"Yeah, you were drunk. But you were an entertaining drunk."

His smile chilled Soyo down to her bones and made shivers ran up her spine. It was the kind of smile that promised wickedness if she ever allowed him an inch of opportunity. To do what? Her mind couldn't form a concrete idea on what it was that made her grip the bedsheet closer to her body, but unconsciously she did. And it was an action that didn't seem to slip past his notice.

It also didn't help that she was practically naked under the sheets. Okay, maybe not completely naked, but partly naked, if you considered her undies and a t-shirt a decent set of clothing. His piercing gaze was starting to unsettle her and she tried not to fidget underneath it.

She had to get a grip of the situation fast, or else she had the uncanny feeling things would get more uncomfortable.

So she was drunk, he said. Judging from the massive headache she was experiencing, that was already a given, but it still didn't explain her current attire.

And as if reading Soyo's mind, the vermillion-haired man answered her question. "After you barged your way in, you suddenly vomited all over yourself…" he said, and paused, as if recalling something humorous. "…and my floor…then fell unconscious. I didn't want to carry you all the way to your room apartment looking like you swam in a puddle of thrown out digested food… so I cleaned you up a little."

She cringed then blushed as he realized how he'd managed to clean her vomit-soaked self. Did she really do that? She knew she didn't really hold liquor quite well, but to actually heave herself dry of all her stomach's contents in front of a stranger; feeling embarrassment was an understatement.

"I-I see," she choked out. "D-Did anything happen after that? I-I mean, after I passed out that is…" She trailed not being able to look straight at him and felt her cheeks grew hotter. Her body felt flushed from head to toe and he must have noticed it because his voice sounded a bit strained while he busied himself in retrieving the contents from the grocery bag he held earlier.

"No, nothing happened," he replied, with a slight edge in his voice. "Do you drink coffee? Or do you prefer orange juice?"

"Ah, c-coffee, please," she answered. He nodded mechanically, took out a can, and handed it to her which she immediately accepted, failing to stop the blush that spread across her already reddened cheeks.

Grabbing his own can of coffee, he drowned it all in one go. An awkward silence filled the room and Soyo tried not to fidget while sipping her own drink. How she managed not to choke on it was a miracle with how nervous she was feeling at the moment.

"By the way, here are you clothes. I took them to the dry cleaners coz my washing machine's not working properly," he said, then took out a different plastic bag with familiar clothes properly folded and clean looking inside it. "It's a good thing there's a 24-hour dry cleaning shop around here and I just had to drop it there before going to work last night."

"So you weren't here the whole night?" Soyo asked in surprise.

"Why would you prefer that I was?" he asked, clearly amused.

"O-of course n-not!"

Grinning, he handed her the newly cleaned clothes which she promptly snatched from his outstretched hand, but not before noticing the dangerous glint that danced in his cerulean eyes.

After a moment, he walked over towards the bathroom and slowly removed his shirt. The careless action made Soyo stiffen and stare at his well-muscled back. She tried not to gawk at it and remembered her previous encounter with the man trotting in her own apartment, with only a white fluffy tower around his waist.

His voice snapped her back to focus. "You can change clothes while I wash up my face for a while."

"Ah, s-sure!" Soyo answered, stuttering.

When he returned she was already wearing the same clothes she had last night, minus the stench of vomit and liquor, which she was expecting was still stuck on its fabrics. But all she could smell was the scent of familiar chemicals that came from dry cleaning clothes. And it somehow made her feel more relaxed despite hating its smell and preferring the lavender-scented detergent she liked using when washing her clothes.

"I'll be leaving now," she said, a little bit awkwardly. "Thank you for the coffee. And for the, uhm, letting me stay in your room apartment last night…" She tried to word it out as best as she could but it still ended sounding weird in her ears.

He must have noticed it for a smile played on his lips. "No problem. Let me see you out."

Mustering up as much dignity as she could, they walked towards the doorway in silence. He gallantly opened the door for her and Soyo walked out with her chin held high. She heard him chuckling behind her, then turned around, and saw him leaning against the door's frame with a smirk on his face.

She tried to school her expression and voice as much as she could but couldn't stop the blush from spreading fire through her cheeks. She couldn't recall the last time she had blushed this much before.

"Erm, so… thank you… again," she started. "And, uhm, I'm sorry for bothering you. I promise it won't happen again, Mister… erm…"

"Kamui," he supplied, still smirking. "You can call me Kamui. And it's no problem. It was entertaining to say the least."

"Kamui-san," Soyo repeated. This was the first time she'd learned about his name and felt something stir at the pit of her stomach. But disregarded the weird sensation as another bout of nausea. She shook her head, force herself to smile, and bowed. "I'm Soyo Tokugawa. Thanks again for last night. And it was nice meeting you."

She swiftly turned around but stopped when a hand grabbed her wrist and pulled her backwards.

"Though next time you try to barge in someone else's apartment drunk, I warn you, don't even think you'll come out of it unscathed, Soyo," he whispered against her ear which sent shivers running down her spine. She felt him linger for a few seconds before straightening, then spun around and gaped at the wicked grin that played across his lips. Still feeling dumbfounded, she watched him slowly close the door behind him.

And for the life of Soyo, comprehension slowly dawned on her. When it did, she was blushing hard as a red tomato and vowed never to drink alcohol for the rest of her life.

A/n: Liked it? That's great! You know what to do next.

Also, I'll be accepting prompt request for this series. So please leave a review! Cheers!