Masumi Itō(伊藤 真澄Itō Masumi) (she also goes by the pseudonym, Hikaru Nanase(七瀬 光Nanase Hikaru)) born May 21, is a Japanese singer and composer from Ibaraki prefecture in Japan. Itō has composed the soundtracks to many anime television shows and is part of the bands Oranges & Lemons and Heart of Air.