- Voice Actor (CV)
- Kana Hanazawa
- Gender
- Female
- Age
- 20
- Role
- Supporting
- Identity
- Eldest daughter of the Saegusa Clan within the Ten Master Clans, former Student Council President of First High School, one-third of the legendary 'Big Three' alongside Juumonji and Watanabe, and current staff member at the Magic Engineering Institute
Personality
Deceptively mischievous
Socially charismatic
Prank enthusiast
Fiercely self-assured
As the firstborn of the prestigious Saegusa family—one of the Ten Master Clans—Mayumi served as Student Council President at First High School, earning her place among the school's revered 'Big Three' alongside Katsuto Juumonji and Mari Watanabe. Blessed with extraordinary magical aptitude, she specializes in long-range precision casting, a skill that earned her the title 'Magic Gunner.' While she projects an image of graceful sophistication in public, those close to her know a different side: a playfully cunning trickster who delights in teasing Tatsuya Shiba at every opportunity.