Ayame Horai, a daughter of the Yakuza, was allowed to leave her home under one condition: live together with her bodyguard, Ritsu. He takes the request of looking after her too literally, though. He even hand-washes her panties!! One day, Ritsu saves Ayame from danger. She's anxious after the event, so she asks him to lie down beside her. As he does, Ayame feels him get hard. Does it mean that he wants to have sex?