- Voice Actor (CV)
- Eriko Matsui
- Gender
- Female
- Role
- Protagonist
- Identity
- Eldest daughter of the Yonomori household and serving president of the high school student council
Personality
academically and athletically gifted
obsessively devoted sister
dual-natured lady with a hidden wild side
legendary campus superstar
Benio is the older sister of the story's heroine Kobeni, widely revered throughout school as an untouchable prodigy thanks to her exceptional grades and all-around athletic prowess. Behind her flawless student council president persona, however, lies an uncontrollable fixation on her younger sister and Mashiro, frequently subjecting them to all manner of outrageous antics at home — a stark and comedic contrast to the graceful image she projects on campus.