Relying on her older sister, Maya, who is married and lives in Tokyo, Rina moves to Tokyo and lives at her sister's couple's house. A husband who can't help but worry about the responsibility of taking care of a daughter of age while neglecting the sisters who make flowers bloom in the recent boyfriend's story. Despite such worries, Saeki, who dutifully visits Rina on her way home from a date, is a sociable man... However, although this man is serious on the surface, he really likes women. Lust for Maya without discipline ….