MKON-148 I, the gloomy guy, get used as material for my sisters' punishment game and have non-stop in-the-vagina harem sex!

I used to be a cute little sister, but these days, whenever I open my mouth, I get told things like, ``You're creepy,'' and ``Don't do the laundry with me.'' One day, my sister came to my house with her friends. I was told, ``Don't leave your room at all!'' and I remained quiet in my room. Then I hear the sound of someone's footsteps coming upstairs. The next moment the door swung open and my sister showed me her panties. As soon as I said, "Die!", he left. What on earth was that? ? It seems like I'm being used as a punishment game agent, and what's more, the hurdles are gradually rising. Finally, I even had creampie sex with everyone in the harem!