- Voice Actor (CV)
- Hiroki Touchi
- Gender
- Male
- Role
- Supporting
- Identity
- Head baseball coach and Japanese literature teacher at Seidou High School, a legendary alumnus who once stood on the Koshien mound as the team's ace pitcher
Personality
Iron-fisted disciplinarian
Deeply loyal and compassionate
Commanding and composed
Unbreakable determination
Tesshin Kataoka is the formidable head coach of Seidou High School's baseball program in 'Ace of Diamond,' a man whose authority is matched only by his deep devotion to his players. A proud alumnus who once graced the Koshien stage as the team's star pitcher, he now shapes the next generation from the dugout while also teaching Japanese literature. Known for his trademark sunglasses and an aura that commands instant respect, players reverently call him 'Boss.' In Season 2, even as mounting pressure threatens his position, he refuses to waver—channeling his energy into forging his athletes' mental fortitude and steering the team through adversity toward the ultimate dream of a national championship.