Mishiranu Imouto Harem

A young man finds himself living with a group of girls who claim to be his sisters, though he has no memory of them. The sudden arrival of these unfamiliar siblings turns his daily life upside down as they insist on sharing his home and his bed.

As the days pass, the boundaries between family and desire blur. The protagonist must navigate a chaotic harem of self-proclaimed sisters, each with her own agenda and affections, leading to increasingly intimate and taboo situations.