|Takeru is a 19 year old freshman. He is considered a loser - Beaten up everyday. His best friend Keto sends him to his cousin Kitsu's apartment. Chaos is created when Takeru finds himself face to face with a naked girl in the Hot Springs. She beats the crap out of him and he awakens hours later. later the girls reveal their names, Ryoko, the girl he saw naked, Her younger sister, Riona and Kitsu. Together, adventures drive each other crazy, especially when jealous competors join in.