She had a younger brother, Myouren Hiziri, who taught her Buddhist magic, but died earlier than her. This made Byakuren fear death greatly, and obtained the power to regain her youth. However, it was considered Black Magic rather than an art of Buddhism. Ichirin was her servant, while Murasa pledged herself to saving Byakuren. Fans think Byakuren is a thief-type like Marisa because of near duplication of spell cards used in previous Touhou games and completely copying Shinki's penultimate attack.