This Ecchi Anime OVA is the Side Story to To Love-Ru: Trouble - Darkness Series. Based on a shounen manga written by Hasemi Saki and illustrated by Yabuki Kentarou, serialised in Jump Square.

Rito continues to be prone to compromising incidents around the ever increasing number of female friends, be they humanoid aliens or human classmates. With so many relations developing, much to his display, not a quiet or normal day passes by:

Momo tries to get Rito's attention by changing her hair style, but with little success... A drunken Celine sprays Mikan with pollen, causing Mikan to develop romantic feelings towards Rito... Rito finds Celine playing with some flowers he has never seen... Run messages Rito about starring in an upcoming Magical Kyouko episode and wants Rito to watch it... Mikan gets a surprise visit from her classmates, Kogure Sachie and Nogiwa Mami, who are interested in meeting her brother Rito... Risa finds Momo shopping for lingerie and asks her out on a date. Momo accepts... As Rito prepares to sleep, Nemesis sneaks into his room and wants him to tell her a ghost story... Mikan and Rito are shopping for groceries, accompanied by Celine, when they notice a mysterious woman with pink hair, a veil, and a beautiful voice...