“Win and have sex. Lose and have sex.” In this adult fantasy, heroine Haruka Takamori battles the mysterious Noroito ninja clan that attacks people in the city at night. Haruka and protagonist Takamaru Ikusabe belong to the righteous ninja group Jogenshu. Takamaru possesses the power to grant superhuman “lust energy” through sexual acts, turning sex itself into the source of Haruka’s strength in battle.