I've always tried to be a good big sister for my cute little brother, Shouta. Ever since he was born, I've showered him with love and attention like a proper sister should. I've helped him with his homework, played video games with him, taken baths with him, slept in bed with him when he's scared of the dark, and even protected him from bullies on the playground.

Shouta is so adorable, I can't help but smile whenever I look at his face. The way he calls me "onee-chan" warms my heart and makes me feel all tingly inside. Even though he's already eight years old, he still clings to me like a baby sometimes. I love him so much, I would literally kill for him. I'm not joking.

And yet...

"Shouta? Who is...this person you brought home with you?" I asked him, trying to hide my obvious displeasure. Shouta was standing at the door holding hands with a little girl I'd never met before. She must have been around his age, maybe eight or nine years old, with tanned skin, a flowery dress, and tomboyish short hair. I could already tell what kind of girl she was. This fucking bitch...who the hell do you think you are?

"Um, onee-chan, this is my friend, Tsubomi-san," Shouta answered shyly. "I met her at school today, and she wanted to come over and play some games. Is...that okay?"

Of course it's not ok to bring this manipulative succubus home with you! Play games?! Yeah right, I see right through you, "Tsubomi", if that's even your real name! You're just after his dick, aren't you?! Get the fuck away from my Shouta, you filthy whore!

...is what I wanted to say, but I bit my tongue instead. Putting on a smile as sweet as honey, I said:

"Tsubomi-chan, was it? I hope you'll have fun playing together." I turned to Shouta. "Why don't you go upstairs first and clean up your room? I'll...show Tsubomi-chan around the house."

"Okay!" He smiled back at me. "I'll do my best!"

I watched as my precious little brother ran up the stairs.

As soon as I heard the door close, I looked back at the little bitch standing by the door. Behind that sweet, innocent little face was a scheming, manipulative slut. A dirty, filthy, cock-hungry whore who was just waiting for the chance to steal my brother's innocence like a wretched semen-addicted ghoul.

There was absolutely no way I could let her near my precious Shouta. I had to put a stop to this now, even if I had to get blood on my hands to do it.