Kira pulled me closer to her as she wraps her legs on me. 

Never in my life would i see my own sister, by blood, to be making a really lewd face. 

We've never really got too close, yet we crossed the final defense. 

I still remember, she was just a cute innocent child. She used to regularly go to my room at night and sleep with me. She would be afraid of every single thing.

That was when i got used to become a dependable big brother to her. We hugged, we got into trouble and almost importantly we were happy. 

Naturally, as i grew older, my interest shifted to another thing. I didn't completely ignore her at first, my spoiling just gradually lessened as time passed. Until one day, i had no time to spend for her at all. 

Absorbed in making friends, going to other places, falling in love and many more.

While she... well she spent most of her time going to school then immediately heading home. She would wait by the living room, no matter how late it is. Sometimes, father would reprimand her and force her to go her room but would sneak out again to wait for Rito by the entrance.

Me? I was numb to it. I haven't even realized it, she was still looking up to her previous dependable brother. 

As more time passed, our distance as siblings grew larger and larger. Sometimes birthdays and family events would allow us to talk, but we would mostly talk about school.

I didn't know about it, i simply got disinterested in my little sister.

But who knew, that sister, who now acted like a oni, is now making a lewd face as the forbidden lust takes over her mind.

You ask me if why i took her cherry? I wanted to mend our relationship. Even if it meant destroying the barrier that distinguish us as siblings. I wanted to crossed the line, but i asked myself, does she want this?

The answer to that? Her screams. That's right, her moans and squeals.

I can no longer treat her as my sister, but as a woman now.

I don't regret it. It's gonna happen anyways.

"Ahhhh~ Onii-chan~ H-How long i wanted to connect to you~! F-Faswer~!" 

Everytime Rito thrusted deep inside, Kira's pussy would tighten, amplifying the pleasure they both feel.

While Rito is midly exhausted from the fact that he just cummed alot of times before. The happy expression of her sister gave energy boost to Rito. Her euphoric expression was like a drug or the ignition in which Rito sped up.

Moreover, Kira's swaying D-cups had erect nipples which were quite tempting to suck onto. 

Even more, Rito's thrust contained longing and love. A similar feeling to finally meeting a long-lost family. 

Meanwhile, a figure can be seen panting at the door. Wet sloppy sounds mixed with a low-tone moan can be also heard. It was Kizune, she were already there since the beginning but chose not to interrupt them. She felt the love Rito had for Kira and similarly wanted that as well but couldn't find a reason to make Rito impassive towards her.

She could only helplessly smile before moaning back as she arouses herself with the view.

Rito thrusted gently but deep, making sure to let Kira's insides take it's shape. After a couple of Kira's orgasms, Rito felt the built-up. When the screaming Kira noticed his cock twitching inside her, she tighten her lock at Rito.

Rito widened his eyes as fear and panic filled the brim of his mind.

"Kira! Are you crazy! Let go!" Rito shouted as he stopped pounding the crazed Kira.

Kira didn't respond, rather, she clamped her pussy onto Ritovs cock seemingly squuezing it.

With every ounce of Rito's remaining strength, he tried to break free, but alas, couldn't.

When he felt his ejaculation nearing, he nearly cried as he continued to scream at Kira to stop her action.

But Kira just arched her back, tightening her legs around Rito's waist preventing and keeping his cock deep inside her. She was semi-unconscious as her body twitched and instinctively shook.

In one final moment, she grabbed the sheets as she stuck her tongue out and screamed. She cummed again, this in turn gave the final push Rito's cock wanted and squeezed it deeply.

Rito, who was sweating rapidly, couldn't hold it on anymore as he groaned.

Suddenly, streams of ejaculation started shooting out deep inside her sister's pussy.

Similarly, Kizune who was watching strangely didn't interrupt as she also orgasm from her own fantasy.

All three of them filled the house with moaning and screaming as they releases their desires.

After cumming so hard, especially inside, Rito collapsed as he picked his own breath.

He slowly felt sleepy as his head made the panting Kira who was violently shaking awake. Her eyes no longer white and her mouth finally closed.

Rito's now limp cock slowly got out of the filled hole. A huge excess amount of semen gushed out, dripping and staining the sheets.

Kira who was roughly breathing then smiled, and slowly patted her brother's head who was sleeping on her chest.

She then felt her eyelids growing heavy, she took one glance on her brother's face before finally closing her eyes.

The two naked siblings, fell asleep.

Kizune who had just recovered, looked at the two before smiling. She then slowly went inside the room, she took a quick peek at the creampied twitching pussy of Kira before blushing. 

Kizune then grabbed a blanket and covered their bodies. She then bent over and kissed Rito's hair before finally closing the lights and leaving.

...

Morning came, the sound of a rough noise coming from the alarm slowly opened Rito's eyes.

"...What...?" As he tried to stand up, he noticed two round perky breasts infront of his face. He confusedly stared at it before widening his eyes.

He then immediately stood up, and there it was, the naked Kira. Her legs opened as the dried semen made her pussy quite odd. Rito then shockingly opened his mouth before saying,

"Shit. It wasn't a nightmare at all, i really did impregnated my sister." His voice was stoic yet filled with worries and helplessness.

Kira then awoke from her sleep. She stood up, rubbing her eyes.

"...Onii-chan...?" She also confusedly stared at the dumbfounded Rito before she widened her eyes in realization.

She blushed as she remembered her lewd self wildly getting fucked by her beloved brother.

She also remembered that he forcefully squuezed his cock for the semen.

"O-Onii-chan! Don't worry last night, it was my safe that day..." She blushed as she smiled.

When Rito heard that, he couldn't help but feel the hope every Rito needed.

"R-Really?!" He exclaimed in surprise.

"Y-Yes... A-Are you disappointed that it was?" Kira blushed even more.

"What? No! Are you crazy?! Do you think it was okay? I nearly impregnated and made you a mother!" Rito scolded his sister.

Kira then got surprised before she had a teary expression of a child that just got stolen of her lollipop.

Rito noticed this and couldn't help but feel hesitant to apologize or hold stern.

It's not that Rito doesn't want to be a father but there are quite many hindrances and obstacles of being a legal father and most importantly what would society think if news came out that he impregnated his own blood-related sister.

Right now, her sister held a beautiful future and he wouldn't destroy more than what he just did to her last night.

Crossing the boundaries of siblings were already problematic much less if he also impregnated her.

Rito couldn't help but rub his temples before saying,

"Fine, i'm sorry, it felt good too. There, happy?" 

Kira nodded happily. She then took a step forward before kissing him.

"Thank you onii-chan!" She then happily hummed as she seductively walked out of the room, she glanced towards Rito before giving a sexy smile.

Rito felt unnerved, he realized, things have changed for worse or better now. It also felt quite good to be called Onii-chan again.

But soon, his peace stopped as he thought about when he beat those students up yesterday. He felt sure he just gravely injured 2 or 3 students. He felt legal laws and problems looming up. But then he realized, why weren't any cops today? I'm pretty sure they would be already filing a case against me? Why is there a delay?

The delay only hastened his worries as he hesitantly shook his head and went out of the room.

After taking a bath together with Kira, he felt the need to put her into a scheduled date in which they can freely fuck raw. Until then, he agreed to satisfy her libido in the meantime by doing non-penetration acts.

He already felt mentally exhausted just from planning with the ectastic Kira.

Afterwards, they went downstairs to eat where they were met with Kizune who just prepared their breakfast.

As usual, he tried to eat in silence as he pondered over the matter regarding the student, how he will act on school, and most importantly, finding the culprit behind the attacks.

'This bread taste weird again, i felt like i tasted this taste somewhere.'

He shook his head as he dismissed the thought, suddenly Kizune spoke,

"You guys were quite rough last night."

Rito almost choked on the food. Kira just lowered her head as she couldn't contain her blushings.

"Especially you Rito-kun, can't believe you wanted to impregnate your own sister~."

Rito wanted to retort back but could only stare in shock.

Of course she'd know! Her room is literally just next to Kira's! How fucking great!

"Next time, it'll be me that's going to be inseminated, okay~?ĺ

She smiled as she innocently announced.

What the fuck, do you think i'm a breeding machine or something?! I'll probably die of exhaustion if i take your virginity today!

When i couldn't get more shocked, the doorbell rang.

Wanting to avoid this kind of talk i said,

"I'll get it." I stood up and headed towards the door.

Of course Kizune and Kira didn't stay. They naturally followed him, curious to whoever that was.

When Rito opened the door, he nonchalantly said,

"How can i hel— Y-You?!"

In front of him, is the western blondie girl, dressed in uniform as she held a luxurious bento box. She was smiling as she stared at Rito.

It was Shika.

Behind her, is Jenna who is also in uniform, waiting on a black sedan car.

I widened my eyes as i shift my gaze to the bento box she held.

It was beautifully designed as the aroma wafted on my face.

"I prepared breakfast for you, Husband." She happily said.

Suddenly, two cold voices resounded behind Rito.

The voices simultaneously said,

"Who are you?"

Shika heard this and turned to look behind Rito. She found Kira and Kizune emitting huge amout of hostility towards her.

Shika was inwardly shocked, before breaking into a wide smile. She knew these two, they were Rito's sisters.

"Hello! I'm your new neighbour! I just moved in two days ago! My name's Shika and Rito is my future husband!"