Yoshiteru Wakaba is a major character in the 'Yuuki Yuuna wa Yuusha de Aru' anime series, specifically in the prequel story 'Washio Sumi wa Yuusha de Aru' and the 'Wakaba Nogi wa Yuusha de Aru' light novel. He is a brave and selfless Hero chosen to protect the world from the Vertex. As the leader of his Hero team, Yoshiteru is known for his strong sense of responsibility, leadership qualities, and unwavering determination to fulfill his duties.