Elfen Lied Volume 5 - Character Cover: Nozomi is a 15-17 year old soft-spoken and shy friend of Yuka who only appears in the manga from chapter 43 onwards. She has a bladder problem and therefore wears diapers. Kohta first encounters her while walking to the store (not realising they both know Yuka), and both are embarrassed when the wind blows her skirt up. They later meet at the inn and Nozomi is revealed to have a great talent for singing. Nozomi is the person that sings the song 'Elfenlied', while teaching Nyu how to sing. - answers.com