Illit will sing the opening theme song for the Japanese TV animation “Magical Sisters Lulutto Lilly,” which starts airing in April, the group's agency Belift Lab said Tuesday. It was chosen to perform “Bubee,” a dance-pop tune that mixes upbeat melody and cute lyrics, fit for the group's "magical girl" concept. The five-member act participated in soundtracks for a slew of animations in Japan, including “Sunday Morning,” an opener for the second season of “’Tis Time for ‘Torture,’ Princess,” and