Furachi na Keiji-SanFurachi na Keiji-san; The Bawdy Policeman; ふらちな刑事さん; 無節操的刑警先生

A detective, Takeda Issei, for the sake of destroying a yakuza group, surrenders his body to a yakuza member, Ishii Suguru, in order to obtain insider information. Even though Takeda has a rule where “I refuse to have a lover or a special person,“ the reason Ishii becomes his lover is――.