Azusa's sister Mina goes to Pia Carrot to become a part time worker. Mina likes Koji and hangs around him all the time. Azusa, protective of her little sister, gets upset when she sees them together.

But, Koji sees Azusa and the manager together and he realizes that he's jealous. They are always arguing and are sometimes at each other's throats... until they both realize that there might be something more between them after all!