Disclaimer: I do not own Yu Yu Hakusho, just my OCs and the plot.

In the library, a bunch of students were gathering around this one girl who was pretty much talking to herself. She was talking in English so some didn't quite understand what she was saying.

"I have no idea what I am going to do. This is driving me to the brink of insanity. I can't wait until tonight. Maybe I will get some peace and quiet for once."

Some people were snickering at the girl chattering on and on to herself while others were looking at her in confusion.

"Okay, time to stop talking to myself and get the hell out of here," she said, getting up from the chair only to turn around and see a ton of people staring at her. Oh crap, I thought I said all that stuff in my head. I hope no one heard me. She quickly bowed and ran out of the library. Fun first day back for Kaiya.

"Hey Sui, Kurama!" Yusuke called when Kurama showed up at the temple with his fiancé.

"Hi," Sui waved at him. "Is my sister here yet?"

"No, why?" Touya asked as he was coming out of the temple.

"She said she was going to meet us here," Kurama replied.

"Well, we haven't seen her," Hiei said irritably.

Hiei ran off into the woods through the trees. "What's with him?" Kurama asked.

"I don't know," Yusuke replied, "but he's been like that all day."

...

Okay, maybe there should be an explanation right about now. It's now the beginning of the spring semester at the university. Sui and Kurama are engaged; Kaiya is living with Mayonaka and Sui; and Mika and Suki are living together. It's everyone's first day back, meaning the girls haven't been to the temple in a really long time since they went home for break. Hiei is in a bad mood because he is really looking for a good fight with Kaiya, but that's nothing new. Jin is who knows where, and so far Suki and Mika haven't shown up. Kuwabara is still at school, and Mayonaka is supposed to be in class but, of course, unbeknownst to Kaiya, she is skipping. Kaiya is irritated because she pretty much has to babysit her twin. Mayonaka is the total opposite of Kaiya, but Kaiya still feels like she's looking at herself acting out as a preppy high schooler and she is not happy about it. So that's enough of the update, on with the story.

...

"So anyway, where are the others?" Touya asked.

"Suki and Mika are still unpacking at their new apartment, so they'll be here later," Sui explained. Mika and Suki finally got an apartment off campus somewhere close to where Sui and Kaiya were living.

"Oh," Yusuke said. "So...where's Mayonaka these days?"

Sui's eye twitched when she heard her name. "I don't know. Ever since Kurama picked them up from the airport and dropped Kaiya and Mayonaka at the apartment I haven't seen either of them."

"Where did you go?" Jin asked coming from out of nowhere.

"She stayed with us," Touya answered. "She is Kurama's fiancé, right?"

"So you left Kaiya alone with her?" Yusuke asked laughing and grinning.

"I feel bad about that already," Sui muttered. "You don't have to make me feel worse about it."

Sui glared at Yusuke causing him to laugh even harder. He was on the ground on his back laughing when Kurama asked, "So...how is Keiko these days?" He mimicked the tone Yusuke had used about Mayonaka.

"You know Kurama," Yusuke said as he stopped laughing, slightly sitting up off the ground, "sometimes I hate you."

"The feeling is mutual," Mika said appearing out of a shadow on the ground. Yusuke jumped back freaking out.

"Jeez Mika, way to give a guy a heart attack! I thought you weren't coming until later."

"We weren't," Suki chimed in hanging upside-down from a tree branch of a very tall tree.

"And how did you get up there?" Touya asked with a confused expression.

"I made a ladder!" Suki shouted happily. "And now the blood is rushing to my head."

Everyone just shook their heads. Mika spoke up, "She bought a really amazing coffee maker over break and we had A LOT of lattes this morning."

"Um, she's speaking as fast as Jin again," Yusuke said.

"I'm home!" Kaiya called out to no one since she didn't expect anyone to be home. However, she knew that Mayonaka was probably still home. Why would she expect her troublemaking sister to actually go to class? She realized during the fall semester that getting Mayonaka to class was like trying to convince Yusuke to go to class without dragging him there personally.

"Maya, you better get out here. You know I can sense your energy, right?"

She heard rustling and headed towards Mayonaka's room. She knocked on the door and then opened it. Mayonaka's room was filled with bright colors, clothes on the floor, and papers everywhere. It looked like a typhoon had swept through her room.

"Wha? What the heck happened to your room? We've only been home for two days! And why aren't you in class? You did horribly last semester!"

"What are you, our mother?" Mayonaka retorted. She was not big on the whole authority thing.

"No, but I feel like it since you are so irresponsible. I can't even believe that we're related. Your room is way too bright. We aren't even supposed to paint the walls and you paint them hot pink of all things?"

"It's better than your boring room. White walls, white dresser, white desk, white book shelf. No color at all."

"But there are tons of ocean decorations, fake snakes, and a traditional Japanese fan here and there. My interests may be boring to you, but not to me."

"Whatever…you're just jealous that I painted my room."

Kaiya scoffed and shook her head while rolling her eyes. "Get dressed. We have to go to the temple."

"Awwwwwwwwwwww! Why do we have to go there?" Mayonaka whined.

"Because my friends are there and Genkai wants to talk to you about your training and what she expects of you."

"When are you people going to leave me alone?" Mayonaka slammed her door in Kaiya's face.

"Why do I even bother?" Kaiya mumbled to herself. This was going to be a long night.

"Well look what the cat dragged in," Hiei said with an irritated tone, coming back from whatever he was doing in the forest (probably killing demons that lived in there).

"It's nice to see you too, Hiei," Mika said sarcastically.

Hiei started looking around. "Where's Kaiya?"

"That girl still isn't here yet," Suki said, boredom evident. The coffee must have worn off.

"Yes, I am."

Everyone turned around and saw both Kaiya and Mayonaka standing in the doorway of the temple.

"What took you so long, Kai-Kai?" Mika asked.

Kaiya and Mayonaka looked at each other, both thinking how much they wished looks could kill. "Someone took forever to get packed and ready."

"Wow, she took longer to pack than I do and that is saying something," Suki said with her eyes wide.

"Whatever," Mayonaka grumbled. "I'll go talk to Genkai like you said, sis." She did NOT say "sis" as a term of endearment, but more sarcastically.

After Mayonaka went to go find Genkai, Kaiya let out a heavy sigh and then looked up at her friends with a big smile on her face. "Well guys, it's official."

"Really?" Kurama and Sui asked.

"What's official?" everyone else asked her in confusion.

"I am now a permanent citizen of Japan. My mom finally gave me the okay to stay here for good."

After saying this, Mika and Suki ran over to her nearly knocking her down. The guys stared at them, still slightly confused. They didn't realize that Kaiya was even planning on staying in Japan once she finished her schooling. However, Kurama and Sui knew she had been planning this. Sui had gotten the okay from her mother when Kurama had proposed to her. Obviously her mother didn't plan on separating the couple anymore.

"I didn't know you were planning on staying here," Yusuke spoke up. "Aren't you going to miss America?"

Mika and Suki finally let Kaiya up. As she brushed the dirt of her clothes, she answered, "Yeah, but I can visit." She looked over at Hiei. "I would miss all of you more."

"Way to be sentimental," Touya said.

"I try," Kaiya smiled. "And the best news is Mayonaka is pretty much failing her classes."

"How is that good news?" Jin asked (when did he get there…).

"It's not for her, but for us it's fantastic. If she fails any class this semester, my mom wants her to live with her in America. Looks like Genkai won't have a student for long."

"What a supportive sister," Kuwabara grumbled. He was answered by Mika and Suki who told him to shut up.

"You don't understand how bad it's been, Kuwabara," Kurama said while shaking his head.

"Seriously," Kaiya agreed. "I mean I was just talking to myself out loud in the library in English and A LOT of people were staring at me. This girl is driving me crazy."

"I offered to 'take care of' her for you," Hiei said. That was the first time she heard his voice in a month. She looked at him and smiled.

"Thanks for the offer," Kaiya said, "but I'd rather my sister live long enough to go to America. Let my mom deal with her."

"KAIYA!" they heard Mayonaka yelling from inside the temple.

"What's that about?" Yusuke asked.

"I guess she found out," Kaiya answered.

Months before, after the graduation matches, Kaiya wanted to discuss Mayonaka's training with Genkai. Kaiya saw how Mayonaka never went to her classes and was worried that she wouldn't come to Genkai's temple during the weekends. Genkai told Kaiya not to worry and that she would think of something should the girl not show up. Well, she had thought of something, alright. A small, black bird was her solution, one that could track demons and psychics. This one was already synchronized with Mayonaka's aura.

"I swear, I am going to kill you!" was all they heard Mayonaka say before she used some of her water techniques on Kaiya who easily avoided them. Kaiya charged at Mayonaka and had her pinned to the ground in seconds.

"Now I will only let you up if you promise to behave. If I let you up and you try to attack us again, don't think I won't be afraid to use my powers on you." Kaiya had the look of death in her eyes causing Mayonaka to shiver in fear. She nodded and Kaiya let her get up.

"Why do I need someone to track me?" Mayonaka asked. "You guys didn't."

"Well ask yourself this, Mayobaka," Mika began, "would you actually come to training sessions?"

Mayonaka glared at her, more because of the insult rather than the fact that she had been accused of something. Mayonaka sighed and took a seat amongst the group. The guys were listening to what the girls did over break. Mika spent time playing practical jokes on her family now that she had full control of her powers. Suki did the same, but to her friends, not her family. Kaiya went back to America, but her break was mostly her trying to convince her mother to let her take up residency in another country. Mayonaka obviously went with Kaiya and drove her nuts. Their mother was not happy with her attitude or her grades, so she gave Kaiya an ultimatum for her twin. If Mayonaka didn't pass all of her classes, then she would not be permitted to stay in Japan. Kaiya didn't have a problem with it. Sui had stayed with Kurama, since she didn't want to go back home, in fear that her mother might try to make her stay, so she saw the guys almost every day and didn't have much to tell.

The guys hadn't done much over the month. Hiei had disappeared for the whole month so they had no idea what he had been doing and he wasn't really interested in talking about it. Kuwabara had spent a lot of time with Yukina, who had been staying with him and his sister. Yusuke worked at his ramen stand. He and Keiko were currently fighting, like always, and he decided to leave it at that. The girls shook their head at how idiotic this guy could be to get into fights with his girlfriend every week. But hey, she still went back to him, despite his attitude. Kurama and Sui decided to teach Jin and Touya more about the human world, starting with amusement parks and ending with zoos (yup, every means of recreation from A to Z).

"I bet that was interesting," Mika said, highly entertained by the thought.

"It was," Kurama said, "especially when Jin thought it would be okay to fly him and Touya into the polar bear exhibit."

Everyone started laughing at that one but stopped when each of them felt another presence at the temple. The all looked to the door of the temple and saw a teenager with brown hair and a pacifier in his mouth standing there.

"Hey, Koenma," Yusuke said with a dumb-founded look on his face, "what's up?"

"I've come to re-hire you as spirit detective, Yusuke."

...

"I thought Yusuke couldn't be a spirit detective anymore because of his bloodline," Kaiya said breaking through the long silence.

"Yes, well that was before…"

"Before what?" Yusuke asked.

"Before everything starting running haywire," Koenma answered back. "We lost track of a very powerful demon and we are sure he is somewhere here in human world."

"So you need us to find him and bring him in?" Kuwabara asked.

"Well, yes that, but also…I don't know how to put this."

"Put what?" Suki asked.

"He's partnered up with a few humans that have special powers, like you girls," he gestured towards Mika, Suki, Kaiya, and Sui. "We don't know exactly what he's up to, but if he's gathering humans, we may have another Sensui-type scenario."

"Who?" Mika and Kaiya asked.

"It's a long story," Yusuke answered. "So you need us to find out what he's planning and then stop whatever it is and then bring him in?"

"Pretty much," Koenma said. "The only thing I can tell you is that he's a fire demon, and a very sadistic one at that. Like Karasu, only much worse."

Sui felt Kurama's muscles twitch when Koenma said that name. "Who are these people you keep mentioning?" Sui asked him.

"Just some old foes, but they are long gone and we no longer have to worry about them; however, according to Koenma, this individual is very similar to them," Kurama stated, his serious demeanor shining through.

"Did you say he was a fire demon?" Mayonaka said from out of nowhere. All eyes were on her.

"Yes, why?" Koenma asked.

Mayonaka flinched. Only Hiei noticed, and his eyes narrowed. "N-Nothing, I was just making sure I heard right." She looked over at Kaiya, "You may have you're work cut out for you."

"Why do you say that?" Kaiya asked. Kaiya was pretty sure she could handle fire attacks after taking a few hits from Hiei over the last two years. Mayonaka flinched again. This time four people noticed it: Hiei, Kaiya, Kurama, and Sui, but no one else.

"Well, okay then," Yusuke said. "Tomorrow we'll start looking for some clues as to where this guy is. We'll keep you updated."

"Wow, you seem a lot more compliant as a Spirit Detective this time around," Koenma remarked.

"It has nothing to do with that," Yusuke grinned. "I'm just bored and could use a good fight to keep me in shape."

Koenma laughed at that. "Figures," he said. "I'll be sending Botan here tomorrow morning to give you your old gadgets and some new ones. Koenma out." With that Koenma left.

"So now what?" Touya asked, everyone, except Mayonaka, around a small campfire Kaiya set up in the woods.

"What do you mean?" Suki asked.

"You girls aren't seriously planning on getting involved, are you?" Kuwabara asked.

"What's that supposed to mean?" Mika asked, a little insulted. "If you get involved, so can we."

"Yeah, but Kuwabara surprisingly has been in many dangerous situations with us," Yusuke said. "You girls haven't. I think the most dangerous thing was Kaiya's sister and Kaiya ended up in the hospital."

"So, I still beat her," Kaiya defended herself. "Besides, we finally have control of our powers. Why not put them to good use?"

"You can't argue with that logic," Kurama said. "Besides, it sounds like you all already made a decision."

"You're damn right we did!" they all shouted as if they were ready to go.

"Hn," they finally heard Hiei say something, "Just don't get yourselves killed."

With that he was off scurrying through the trees, deeper into the forest.

"What the hell was that all about?" Mika and Suki asked.

"I have no idea," Kaiya said.

"He's been unusually quiet lately," Kurama said.

"He's always quiet, though," Yusuke said. "What makes now any different?"

"It's a deafening silence," Kaiya said, still looking into the forest. "I'll be back in a bit guys."

Kaiya got up and walked into the deeper parts of the forest to go find Hiei.

A/N: So anyway, the only thing that really needs explanation is the packing thing. Suki never has anything ready to go when we go to pick her up or anything. Then we have to wait for her to pack at that can take up to three hours for an overnight bag.

And we're back. Kaiya, Mika, Suki, and Sui reporting for duty to help the spirit detectives in a new case. Yusuke is a Spirit Dectective again and the girls want to help since they are now in control. Mayonaka is freaking out about this fire demon that Koenma mentioned and only few seem to noctice. Hiei is acting all pissy about something. Next chapter will focus on three things: (1) The reason Hiei is pissy, (2) why Mayonaka is freaking out, and (3) the girls are going to learn a little bit about some of the guy's old battles/enemies.