The princess in a family of gangsters, Isaku Senagaki... And the overprotective first lieutenant who fabricates his age to enroll in high school along with her to protect Isaku from venomous insects (men), Keiya Uto. Keiya is Isaku's first love... But, he still has no idea! All he does is treat her like a child... Enter Mikio Tanuki, a boy Isaku's age who also grew up as part of a yakuza syndicate. "I wanna be friends with ya! ♪" Mikio claims, but what's this sense of foreboding in the air as the culture festival draws near?!