Kachiro Kato

Kachiro's most defining feature is his neat, bob-style haircut.

He is noted for having a small, youthful, and cute appearance.

He has a quiet, gentle, and somewhat timid personality.

This reserved nature unfortunately makes him an easy target for more aggressive individuals.

Kachiro is a first-year student enrolled in Class 1-5 at Seishun Academy Middle School.

His father works as a coach at a tennis club, giving him some background in the sport.

He is close friends with fellow freshmen Satoshi Horio and Katsuo Mizuno, forming a supportive trio.

As an unsung hero, he loyally helps Ryoma Echizen by scouting opponents and gathering information.

His timid demeanor has led to him being physically assaulted by the aggressive player Jin Akutsu.

Supporting Ryoma

Kachiro actively assists Ryoma by gathering intel on his upcoming opponents.

This supportive role can be risky, as he was once caught and attacked by a player he was scouting.

In "The Prince of After School"

In the official spin-off series, *The Prince of After School*, Kachiro appears much more frequently than in the main story.

His screen time in the spin-off surpasses even that of his friends Katsuo Mizuno and the frequently seen Satoshi Horio, and he is often used as the punchline in jokes.

Trivia

He is almost always referred to by his nickname, "Kachiro," throughout the series.

Due to his small and cute design, he is a popular subject of fan art on platforms like Pixiv.

Voice Actor & Stage Actors

Voice Actor:

He is voiced by Rei Nakagawa, who also voices Ryoma Echizen's pet cat, Karupin.

Musical Cast:

• 1st Season: Toshiyuki Toyonaga, Yuya Mori, Ryo Kawamoto, Tsubasa Ito, and Hiroki Hirai.
• 2nd Season: Shunya Ohira and Ryo Mitsui.
• 3rd Season: Ritsu Shinohara and Gakuto Okui.