- Voice Actor (CV)
- Kazunari Tanaka
- Gender
- Male
- Age
- 26
- Birthday
- April 5
- Role
- Supporting
- Identity
- Head coach of Karasuno High School's boys volleyball club and proprietor of the Sakanoshita Store
Personality
Keen Observer
Passionate & Dedicated
Blunt & Straightforward
Tough Exterior, Warm Heart
Grandson of Karasuno's legendary volleyball figure Ikkei Ukai, Keishin initially ran a modest convenience store before fate handed him the coaching reins of the school's volleyball team. Armed with razor-sharp tactical insight and an exceptional ability to read the game, he guided his players through an intensive Tokyo training camp in Season 2, helping them unlock a diverse and dynamic offensive arsenal. Beneath his rough-around-the-edges demeanor lies an unwavering sense of duty and genuine care for his athletes—qualities that have been instrumental in reviving Karasuno's glory as a powerhouse school.