When I Watched My Big Sister Getting Fucked by My Stepdad, I Got A Miserable Shotacon Erection Shoko Takahashi.

Mom remarried this dude and things go well a while. However, Mom suddenly passed away, and just as fast the new Dad character completely changed. He begins to channel his anger against the daughter (Takasho) and to the little brother. Especially to Shoko, who she begins to bang on a daily basis. The little brother witnessed the abuse, and got a boner… Like Father like son. Because yes, its a new Shota series, by MOODYZ no less.