Shimai x Choukyou: Zettai Fukujuu, Celeb Shimai to Mainichi Nakadashi Seikatsu

Based on the erotic game by POISON.

One day, the protagonist is suddenly hit by a car and loses consciousness. When he wakes up, he finds himself sleeping in a beautiful woman's house. She - Mao Segasaki - tells him that her younger sister Mio hit him, but brought him to her house to cover up the accident, and asks him not to tell anyone, as she will make amends. The protagonist is enraged by her selfish excuse, but after threatening the sisters into submission, he decides to stay in the house, play with their incredibly beautiful bodies as he pleases, and live a life of bliss!

(Source: Parabook, translated)

Note: Includes 1 extra chapter in the digital limited edition.