Stop!! Hibari-kun!

After his mother’s death, Kousaku Sakamoto follows her final request and goes to Tokyo to live with her friend Ibari Oozora and his family. With his father gone and nowhere else to turn, he accepts the arrangement—then discovers that Ibari leads the Oozora Group, a mob ring. Kousaku considers leaving, but changes his mind after meeting Ibari’s four daughters: Tsugumi, Tsubame, Suzume and Hibari. He soon learns that Hibari is actually Ibari’s only son. Now Kousaku must adjust to life among mobsters while dealing with Hibari’s advances toward him.