Nao has a humble personality who doesn't like men and is timid when it comes to love. On the contrary, Azusa pushes forward too much in love and just gives up. The two were sharing a room, but one day Azusa suddenly moved into her new boyfriend's house. His roommate Ryosuke, who came to replace him, is a rude, arrogant and disgusting guy. But Nao is gradually attracted to him...