Sister Prison

Synopsis

Parthenon presents a “(Sister + Sister) × Younger Brother Bias ADV” with three key features!

◆Key Feature 1: “Protagonist Always Passive”

The protagonist is born into the duty of being a slave (younger brother). Of course, a slave cannot defy their master.

Experience foot jobs while being insulted by the queen-like Asari, or forceful fellatio from the possessive Asako. Plus numerous other H-scenes with a passive protagonist.

◆Key Feature 2: “All Heroines are Dominant”

If the protagonist is passive, the sisters are aggressive! Packed with harsh and explicit verbal abuse!

Let yourself be dominated and insulted by these assertive big sisters!

◆Key Feature 3: “All Heroines are Sisters”

All heroines this time are the protagonist’s older sisters. Complete with the guilty pleasure of forbidden incestuous play.

A must-see for sister game fans!

◆Story

After losing both parents in an accident, the protagonist Hidemi begins living with his two older sisters, Asari and Asako.

On his birthday one year, his sisters give him a present: his own withdrawal from school and an overwhelming confession of love from his sisters.