Do S Ane to Do S Imouto ~Otonashii Shotakko ga Do S na Onee-sama to Do S na Imouto-sama ni Ijimerare Shasei Saseraremakuru ADV♪ Hentai Mazo na Hajisarashi Ochinchin Kara, Hai Doppyun♪~
Original title: ドS姉とドS妹 ～大人しいショタっ子がドSなお姉様とドSな妹様に虐められ射精させられまくるADV♪ 変態マゾな恥晒しおち○ちんから、はいドッピュン♪～
Kou Saotome is smack in between Arisa and Ruka, the middle brother of two sadist sisters.
Between them he's constantly getting forced into things. They're not even the only ones.
At some point a guy's just gotta surrender: "Okay, I'm a slave to all women, I'm a masochist!"