Epsilon is a member of the secretive organization Shadow Garden in the anime series 'Kage no Jitsuryokusha ni Naritakute!' (The Eminence in Shadow). Known for her exceptional magical abilities and musical talents, Epsilon is one of the Seven Shadows, the elite core group supporting the protagonist, Shadow. She is recognized for her elegance, intelligence, and somewhat prideful demeanor, often playing the role of a strategist within the organization. Her loyalty to Shadow and her dedication to their cause make her a vital figure in the group's efforts.