Unit: Knights Age: 17 Birthday: May 5 Club: Archery Club Leo is a leader from unit Knights. He is a genius composer who has created numerous songs. He greatly admires his little sister and uses her as inspiration for his songs. During his second year, he experienced a slump and depression that led him to leave the academy temporarily. In the spring of his third year, he returned and declared himself "King" and led Knights. When he graduated from the academy, he gave up his dreams and ambitions, handing over the throne of "King" to Tsukasa.