- Voice Actor (CV)
- Chinami Hashimoto
- Gender
- Female
- Age
- 15
- Birthday
- December 21
- Role
- Protagonist
- Identity
- Mitsuki serves as the protagonist Yuuya's newly acquired stepsister and a mysterious transfer student at his school.
Personality
Dual Personality
Reserved Nature
Angel-Possessed
Brother-Complex
A soft-spoken and composed young woman who became Yuuya's stepsister when their divorced parents remarried. Her serene exterior conceals an extraordinary secret—shortly after transferring schools, she was possessed by an angel who harbors deep affection for Yuuya. This supernatural presence forces her to shift unpredictably between her naturally introverted demeanor and the angel's bold, attention-craving personality, with these changes becoming especially pronounced whenever Yuuya is around.