Chapter Text
“Kai-nii do you want to play?”
He sighs, “Didn’t I tell you I was busy? Go play with Mimic.”
“Ew, he’s creepy.…” Why doesn’t your big brother ever want to play with you? “Do you hate me??” Your lips are quivering, voice cracking.
Chisaki rubs his temples, “No, I don’t hate you.” He just doesn’t want to play with a fucking twelve year old. You always want to play stupid fucking games with him or go to the park, which he despises.
“Then why can’t you play? Okay, if you play I’ll let you choose what we do.”
“I can’t. I’m busy.”
You start to wail, “I-I hate you!”
You shrill cries echo through his office, it’s giving him a migraine. “Fine!” He snaps, slamming his book down. “Just quit fucking crying!”
Despite you saying he can pick what to do, he still lets you choose. Of course you fucking wanted to go to the park, it’s always the park. “This place is full of germs.” Even though he’s wearing his gloves, he still feels dirty.
He’s pushing you on the swing, “Higher Kai-nii!”
Chisaki is growing sick of this shit, so he pushes you off. “Oops. Accident.”
You start to cry, “You’re so mean. I know it wasn’t an accident!” Your knees are scraped and bloody. “I’m going to tell dad!”
His migraine is coming back, “No, just stop fucking crying.” He crouches down and looks at your knees, he cringes. Even though there is not a lot of blood, there’s enough to trigger his hives. His eyes wander between your legs, staring at your panties. “P-Pull down your dress.” Another reason he doesn’t like being around you, he’s sick. Sick beyond the germaphobia, he’s attracted to you. He grabs your hand and pulls you up, “Come on, I’ll clean you up.” Not in a sexual way. He can control himself, he has so far.
Giving you a bath is usually Kurono’s job, but he left for the day. Now Chisaki has to do it, fuck. You don’t even notice that he’s eying your nude self.
“You were really mean today, Kai-nii…” You mumble as you pour a dollop of soap on your hand. “But I forgive you.”
“Sorry…” He tones out your babbling, while admiring your small tits. If the water wasn’t so soapy, he’d check out more of you.
“I’m done, can I have the towel?”
He snaps out of his trance, “N-No.”
“What? I’m done!” You think he’s being mean again, but he tells you that you’ve missed a spot. “Where?”
He tugs off his glove then shoves his hand under water. “Here.” Two fingers slip past your slit, massaging your sex. Maybe he can’t control himself…
“Ah! Kai-nii!” It feels really funny, almost ticklish.
He scoffs, “Do you ever clean down there?” His fingers pump into you, “ fuck.” He sighs. His pants feel much tighter than earlier, his cock is aching. “H-Hey, why don’t we get out of the bath and play?”
“Ah-ah o-okay!”
He takes his fingers out of your cunt, “We can play doctor, doesn’t that sound fun?”
You dry yourself off, “I don’t like the doctors though…”
You’re dry enough, so he picks you up by the waist. “It’s just pretend, stupid.” He’s now carrying you to his bedroom and tossing you on his bed.
“I’m still naked, Kai-nii! I can’t play while I’m naked!”
“Stop yelling, please…” He’s now frustrated and horny, “I have a bad headache, and you’re going to fix it.”
He’s already stripping down in front of you, why though? You think he’s being weird, “You’re gross.” You clench your eyes shut, “Get dressed.”
Chisaki picks you up and makes you straddle him, “I’m sick and if you do what I say, you’ll make me feel better.” He orders you to grind your cunt against his cock, “Just keep doing that, fuck.”
It doesn’t feel kinda good if you're honest. You still don’t know how it’s going to make him feel better though. “How much longer?”
Chisaki waits until he feels your fluids lubing his cock, “Sit up a little, there.” He's holding his shaft, positioning the tip along your small opening, “Just sit down, slowly.” His fat cock stretches open your small cunt, “Fuck, fuck…”
“Kai-nii!” It hurts too bad, so you stop moving. “I’m done playing.
He’s already halfway inside of you and he’s not going to stop. “Quit being a baby. Don’t you want to make me feel better?” He grips your small ass tightly, shoving you down further until he hits your cervix. “Fuck!” He groans as you cry. He’s too wrapped up in his own pleasure to even notice the cries that he hates so much. “Bounce on my cock, baby sister.…” He’s so fucking sick, far from being cured. He plays with your swelling bud, “Cum on your big brother’s cock.”
You think what he’s saying is gross and a tiny bit confusing. “Ahh Kai-nii! I don’t know what that is~!” You feel a really good feeling building up in your belly, “Kai-nii!!”
Your plush walls pulsate softly around his cock, “Good girl, cumming on your brother's cock. Very good girl.” He’s practically doing all the work now, helping you ride his fat cock. He moans your name constantly as he chases his climax.
“I’m peeing!”
He’s disgusted, but he knows you’re not pissing yourself, “Dont say that! Say you’re cumming again!”
“C-Cumming!?” You sound so unsure.
“Fuck!” His cock throbs heavily as you cum again, “Fuck M gonna cum, baby!” His orgasm is intense, he swears this is the most he’s ever came.
You pull yourself off of him, “Ew!” All this sticky white stuff is leaking out of you, “Kai-nii…” you are panting heavily, “Do you feel better?” You collapse on top of him, about to pass out.
He doesn’t care he’s drenched in sweat and other bodily fluids, nor does he care his hives are breaking out. “Yeah, you did. I love you, baby sister.”
“I love you too Kai-nii.” You’re glad you helped him feel better, and you’ll always help him feel better if he asks.