The bedroom of a mother sleeping alone... faint breathing, a thin nightgown carelessly slipping off... a son who is very interested in his beautiful and erotic-bodied mother spends his days swayed by his accumulating sexual desire... one night, his sexual desire that he had been suppressing due to the scent of a cram school mother drifting from the bedroom runs wild... the son secretly sneaks up on his sleeping mother... a hard dick rising before his eyes!!