A boy impulsively rapes his childhood friend who makes fun of him for being a virgin. However, that's not enough... he has sex with his younger sister through the curtains after club activities! He attacks his older sister while she's taking a bath and she gets horny and gives him sex advice! He rapes his mother at night because her husband won't let him have sex with her! He has a masochistic temperament and can't tell anyone about it even if he's raped by force! All of his family members who inherited the big-breasted gene are F cups or larger!