- Voice Actor (CV)
- Momo Asakura
- Gender
- Female
- Age
- 12
- Role
- Protagonist
- Identity
- The younger sister of protagonist Yu Otosaka in Charlotte, a middle school student at Hoshinoumi Academy who manages all household duties for the Otosaka siblings
Personality
Innocent and pure-hearted
Cheerful and energetic
Devoted and caring toward her brother
Passionate idol fangirl
Ayumi Otosaka serves as the warm, irreplaceable heart of Charlotte, bringing brightness to her brother Yu's everyday life through her radiant personality. A self-proclaimed superfan of idol Yusa Nishimori, she also has a quirky habit of incorporating sweet pizza sauce into nearly every dish she cooks. While she initially represents the story's lighthearted slice-of-life atmosphere, the sudden awakening of her catastrophic ability known as "Collapse" shatters that tranquility entirely, triggering one of the most pivotal and emotionally devastating turning points in the entire series.