Disclaimer: I do not own Tokyo Ghoul.

WARNING BAD CONTENT IN THIS FIC! OOC'S AS WELL! They're pervs!

Summary: Kureo wanted to have a son but after his wife's death, he only had a daughter. So he adopts three sons instead. Is that even a good idea? [Arima!Kaneki!Haise!Akira!]

A/N: Let's clarify something first. Kaneki and Haise will be TWO SEPARATE ENTITIES in this fic. They will be twins, okay?

SHH, Don't tell Daddy!

After Kureo's wife died of organ failure, he never had the son that he wanted. Which leaves him only to have a daughter, Akira. He wants a son to manage his estate, his business, that's why he decided to adopt a son. Or well, he adopted three new sons that day.

Arima Kishou, a child that he will claim was his firstborn so he can takeover the business without a problem, the twins, Kaneki Ken and Haise Sasaki.

The four children were able to easily get along at home. Despite Arima being eight years older than Akira, he still had the patience to play with her and the twins at times. Throughout the years, no one was causing much trouble either and life for Kureo had been easier. Profit comes and his inventions acknowledged. But he should've thought about his plans before agreeing to leave home for a week.

"I'm leaving you in charge." Kureo tells the now-23 years old Arima. "Make sure the twins don't get much trouble at school and Akira doing her homework."

"Yes Dad." Arima nods.

The three fifteen year olds ran towards Kureo to give him a goodbye hug. "Don't go!" Kaneki would cry to his suit. "Don't go!" Haise would echo.

"Yeah please don't go!" Akira would say as well.

Kureo pats the three in the head, smiling at his children. "I'll be back before you know it. I'll even bring souvenirs too. What would you guys want?" he bribed so they'd let him go without crying.

"A mask!"

"A sword!"

"A cat!"

Kureo just nodded at them, not wanting to promise anything yet. "Alright, what about you Arima? Anything you want?" he thought maybe Arima had a logical request than the ones that the three asked for. "It's unfair if I get you nothing, right?"

"Maybe a new book would do." Arima said as he fixed his glasses.

"Alright then!"

Later that day, the three were doing homework at the living room as Arima instructed them to. He was strict and a 'jerk brother' as they would call him, but their name-callings do not change his mind once it was settled.

"Hey Akira, what's that letter in your bag?" Kaneki asked when he saw Akira threw a colorful envelope in her bag. "I always see you throwing one in the trash."

"One of the guys in school gave it... I think." she says and gives it to Kaneki.

"You think?" Kaneki opens the envelope to see that it was some sort of love letter. "Whoa look there's five yen here!"

"How can you not be sure?" Haise asked while Kaneki was reading the contents of the letter.

Akira shrugged, "Dad said never to accept gifts and letters from boys. So I reject them. But always, always, someone would leave letters and stuff in my bag." she says, sounding annoyed at the fact that they are invading her bag's privacy.

"Why do they give you letters and money?" Kaneki asked. "I also cannot read kanji yet so this letter is gibberish."

"Let me see." Haise takes it from Kaneki and begins to read, "'Dear Akira, you are very beautiful. Please accept me to be your boyfriend.' what does that mean?"

"What is a boyfriend?" Akira inquired as well.

Arima who was at the background heard their silly conversation. He chuckled and approached the three, taking the letter from Haise. "It means he wants to be your future husband." he says to exaggerate and the three gasp. "If someone gives you something like this again, tell me."

"Yeah tell us too!" Haise says in an overprotective manner. "We'll tell him to back off!"

"Yeah!" Kaneki echoed.

"I will!" the blonde replies with a smile.

Later that night,

Arima was talking with Kureo over the phone to report how things have been on their first day without Kureo. "Ah I see, so they listen to you huh? That's good. I need them to study hard so one day they can take over our business as well." Kureo said with glee. "Have a good night's sleep. Tell the kids I love them."

"Yes Dad." Arima ends the call and sat on the bed, reaching for the magazine under the pillow to see images of women wearing revealing clothing. "'Boyfriend' huh? I guess I didn't notice she's growing up." he mumbled and closes the magazine. "Maybe I should go check how well she grew up."

He leaves his room and knocked on Akira's door before entering.

Arima saw that she was already lying down in bed sleeping. 'Right I told the three to sleep early or I will make them clean the bathroom.' He thought and mentally laughed how obedient they are in fear of cleaning the bathroom. He silently closes the door and quietly approached his stepsister soundly asleep. Her hair was touching her shoulders now and it was not braided since she was sleeping.

She looked similar to the woman in Kureo's photos, Kasuka Mado. He smiled and knelt down the floor, staring at her face. He poked her nose softly and his finger slides down to her wet lips.

"Akira." he calls her quietly. "Akira it's nii-chan."

He lightly shakes her by the shoulder and her eyes open, "Nii-chan?"

"Wake up." he says and pats her cheek lightly. The girl yawned and rubbed her eyes shortly before focusing it on Arima. "You awake now?" he asked and she nods, although she had a questioning look what it was about.

"What is it?" she asked and sat up, the blanket falling to her lap, revealing she was wearing her nightgown.

"Nii-chan just discovered a new fun game to play." he baited to get her attention. "It's called the Heat Daze." he says and sits in the side of her bed.

"Can't we play it tomorrow?"

'We could, but I'm really on for something naughty tonight.' he thought. "No, come on. Just one round." he insists and the girl nods. He was delighted to see that she listens to big brother. It turns him on. "Alright, first is this, just follow big brother's lead."

He leans close to her nibbled on her upper lip. Having a taste of those soft lips before he decided to lick it. He saw that Akira only watched him, uncertain of what she should do. He gently bit on her lower lip then and cupped her face, hovering his body over her. "Nii-chan," she begins to say, too conscious that her big brother was on top of her, although he did not crush her just yet.

"Stick your tongue out and I'll show you how this works." he instructs and she sticks her little tongue out as he said. He captures that tongue into his mouth and his bigger tongue licked on hers. He sucked on her trespassing tongue and by instinct the blonde copied him, kissing him back. He was pleased with her response and twirled his tongue around hers, this time he gently pressed his body to hers and deepens the kiss.

Arima allowed it to last for two more minutes before he took another step forward and groped her thighs, to which the young girl responded with her hands catching his wrists.

"Did I tickle you?" he teased and his filthy fingers slowly crawled up, gently massaging her thighs.

"It makes me feel weird." she answers, still gripping on his wrist.

"Where?" he asked and this time, a hand arrived to her cunt, cupping it gently, "Here?" he asked and she flinched, this time she was squeezing on his wrist. "I won't hurt you. This is part of the game."

"Dad said I'm not allowed to let any guy make physical contact with me."

"I'm not just any guy." Arima said with a chuckle. "I'm your big brother." he said and two fingers probed in her hole, she moaned and he began massaging her clit next. "I'll be very gentle. Just like this." he said and continued to rub his fingers despite the underwear still around, he can feel her getting wet. She moans and he kept on doing it. "Oh right, to be fair, let me show you mine."

He takes his hands off her and unbuckled his belt. The blonde watched him unzip his pants to allow his length to be revealed to her. "It's different."

"Of course it is." he says with a chuckle, "It's used for something. Like penetrating or... you can suck on it." he said casually. "Bend down on fours, come on." he ordered once more and the blonde leaned down in front of his rod. "Then put it in your mouth and just suck on it like it's a candy."

"Uhm, okay." she pokes it first and the moment her finger touched the tip of his member, he could not believe how easily he hardened at her touch.

"Hurry." he growled and pushed his rod to her wet lips. Slowly putting it in her mouth, he moaned when his rod had invaded her caverns, her tongue was small yet it was licking on him hard. "That's it Akira, that's it." he says, satisfied and attempted to push his member a bit further. She held on his thighs to keep her balance and continued sucking on his large member that very much pleased the older brother.

Arima wanted to reach his climax but she was taking it too slow, so he grabbed a fistful of her hair and pushed her to swallow him whole. Moving her head back and forth so her mouth would move around.

"Just like this Akira, yes. Aaah! Yes put your tongue to work! That's it!" he moans. "I'm almost about to..."

Before he knew it, he let out his liquid in her mouth and the girl quickly pulls away, coughing as some of it she was able to drink. Arima chuckled and allowed the rest of the liquid to squirt to her nightgown instead. "Nii-chan you peed on me!"

"No it's not pee Akira." he says and this time takes her hands to touch his hardened member. "Now touch it some more."

"Arima-niichan what are you doing?" Haise asked as he opened the door.

He saw that Arima was kneeling in bed, his rod being touched by Akira's hands and Akira sitting down the bed like it was normal to touch someone else's private parts. He blushed and was jealously staring at his brother's status. "Haise, perfect timing. Join us play this game." Arima invited. "Close the door when you enter." he says and Haise did so.

"What kind of game is this?" Haise asked. He's been watching a few porn so he was sure that this wasn't a child's game.

"It's called the Heat Daze. If it's two players no one is it but in this case, someone has to be it." Arima explained. Then he pats Akira in the head. "You're it Akira-chan!"

"Eeeeh? Why me? What does the it do?"

"It's a simple task. You just have to follow what we say." Arima says and he sits down the bed and pulled his stepsister to sit on his lap. "Haise come on, this is how it'll work." he calls and Haise approached them, still blushing. Arima then takes the nightgown off the blonde and Akira shrieked and covered herself. "Shh! this is also part of the game."

"Why do I have to be naked?" she asked and Arima takes her arms off to expose her front to Haise. "Nii-chan?"

"We won't win if you're not." his simple explanation. "Alright Haise, what does your instinct tell you to do?" he asked and placed Akira's hands to her side so he can cup both her premature breasts, making her moan. "You can do this, or..." one hand reached down to her stomach and down passed her underwear where he touched her bare sex. "..this."

"No nii-chan!"

Haise gulped and leaned close to plant a kiss on Akira's lips instead. He's seen a few videos like this before and he's been quite curious how it feels like. So he went for the lips to kiss, his small hands squeezing on her nipples that made the girl moan once more. Haise stopped the kiss when he felt the pleasure to tug and squeeze her nipples while staring at it.

"Aaah! Aaah! Haise stop!" the blonde says while moaning. But Haise continued to press on her breasts, his thumb pressing it hard and he can capture her breast in his hand in one touch. It was soft. Much better than the one in the videos. "Nii-chan tell him to stop!"

But Arima had his own agenda. His hand was already massaging on her clit and the side of her hole, the wetness was encouraging him to go further and finger her.

"Aaaaahhmm..! Nii-chan! Aaah!"

While Haise was observing her breasts, he saw below how Arima was working underneath the undergarment covering her. "Arima-niichan, can we take it off? I want to see it as well." he asked and Arima nods. Without effort, Arima took it off and Haise leaned his face to her clit. "It's so wet down here." he says and began to lick the fluids coming dripping down from her.

"aaaAaaaagghhh,,, Haise!"

Haise ended up burying his face to her sex and licked on her while Akira was gripping on his hair, attempting to push him away. But Haise was not the only one she had to deal with, Arima was now assaulting her breasts with his rather big hands and her neck being tongued by him as well.

"I don't want to be the it anymore! Nii-chan!"

When Haise thought that he'd finish cleaning her up, she reached her climax and now a new set of liquids are flowing out of her. She pants and her struggles have lessened as she tried to catch her breath and recover her strength. Haise licked on her twitching folds and drank the liquids while sucking on her. "Haise, let's penetrate her at once." Arima decided.

"Mmhmm..." Haise agrees after he was satisfied with tasting her. He cupped her sex afterwards and he moaned. "Okay we should do that."

While Haise was removing his pajamas, Arima lifted Akira up a bit to position his rod to her anus and puts it in with one swift movement. He covered her mouth to lessen her screams otherwise Kaneki would awaken and hear. "Shhh, you don't want Kaneki to join the game do you?" Arima tells her and licked on her earlobe shortly before moving his hips to see how far he's entered.

"Nii-chan, it's stuck there, take it off!"

This time she sees Haise positioning himself in her front. And she was sure his private part looks exactly like Arima's, only smaller. "Here I come Akira!" he says and pushed it in, his body pressing her breasts and her back hitting Arima's warm chest. "I'm in!"

"Just enjoy this okay?" Arima tells her and the two began to thrust now. Akira gripped on Haise's shoulders and moaned.

"Aah! Aah! Nii-chan! Haise!"

"Yeeeesss!" Haise moans and captures her mouth to kiss her while Arima continued to play with her breasts.

The two were doing it at the same time, the feeling was mutual. Pleasure. But for Akira, at first it was pain, a little later the pleasure got into her head that she no longer complained to them.

When the two had reached their climax, they both let it all out and lay Akira in bed, exhausted.

Arima leaned over he body, rubbing himself to her chest and kissed her once more. Biting on her lip gently. "Don't tell daddy, okay? This is our little secret." he says and she nods.

"And Kaneki?"

"We'll invite Kaneki next time. Goodnight."

.

.

.

.

"I'm home!" Kureo says after finally arriving back home. The three kids runs to him for a hug, or well, to snatch the souvenirs he's got for them. "Oh yes this one's for you, this one's for you and then for you!"

The kids ran to their corners to check the gift that Kureo bought for them. Arima was the last to approach them. "Hey Dad." he greets.

"I got you something too, don't worry." Kureo said and handed him a fountain pen. "So how was your week?"

"Uhm..." Other than playing with Akira and Haise every night, "nothing much. Just like the normal days I guess."

"I see. Well then, let's celebrate my return! If I'm lucky, they will choose me again to travel and negotiate with clients."

"Of course..." Arima said with a smirk.