The youngest of three siblings, 'Machi'. Under the same roof, the siblings who live harmoniously together have a secret they can never tell anyone. The sadistic eldest brother indulges in his sister's body every day, and the masochistic second brother gets aroused by seeing 'Machi' like that... One day she is made to climax by her eldest brother's huge cock, another day she seduces her second brother to play with his dick... This is a record of the depraved days of three siblings where incest has become an everyday occurrence.
