Momo Belia Deviluke is Nana’s twin, as well as Lala’s younger sister in the anime series, “To Love-Ru Darkness.” In “To Love-Ru,” she used to be seen with Nana all the time, but in “To Love-Ru Darkness,” they are not together as often as before because while Nana becomes closer with Kurosaki Mea, Momo becomes obsessed with Rito and focuses on how she’s going to execute “The Harem Plan.”