An innocent boy Keita happens to live together with a female cousin Hiroko. Hiroko loses the last remains of her reason by his single utterance, “My penis grows bigger when I see you!”Full voice. All sex scenes are in animation!Keywords: Blowjob, Masturbation, Boob fuck, Between thigh fuck, Handjob, Internal ejaculation, Doggy, Cowgirl, Anal fuck, etc.