Despite being a sequel to To Love-Ru, the entire cast, both established and fresh faces, make an appearance. Rito finds himself entangled in risqué and unrestrained ecchi scenarios as per usual. The unusual abilities of the Deviluke sisters still allow them to capture Rito's heart. With the arrival of the transfer students, Nana and Momo, Mea becomes acquainted with a cheerful and carefree demeanor. But Momo yearns to create a harem for Rito and devises a plan. Her plan is halted when she confronts Golden Darkness, also known as Yami, but both are disrupted by students possessed with unexplainable strength. A new plot arises as a mysterious individual who dominates the students tests Yami's skills in assassination. Can they unmask this unknown foe?