Kyonyuu Kazoku Saimin: vol.1
Based on the erotic game by Lune. Prep school student Yuichi Mamiya's old one remarried suddenly! New family be 3 people... Mifuyu who shoots mature adult charm, eldest gal Natsuki of the huge breasts, second gal quiet Akiba of the huge breasts. The sexual desire for them is not controlled... A certain day, yuichi obtains a mysterious penlite that does the partner in the stoned state only by showing that light! Mifuyu is first done as the subject of penlite experiment, an indecent act that cannot be normal is done. And Natsuki and Akiba, that body is opened for Yuichi by the stoned effect.