Tokyo-born Tokuyoshi Kawashima works as a Japanese voice actor under the 81 Produce banner, and has voiced the detective Naomasa Tsukauchi throughout My Hero Academia since the series began in 2016.
Kawashima has voiced Naomasa Tsukauchi, the lie-detecting detective who partners with the pro heroes, in every season of My Hero Academia since its 2016 debut. The part has carried over into the 2025 spinoff My Hero Academia: Vigilantes, with a second season of that show planned for 2026, making Tsukauchi one of the longest-running roles of Kawashima's career. It is a steady, procedural voice that anchors the show's more grounded detective-story scenes.
Kawashima has worked as a voice actor since the mid-1990s, mostly in supporting and recurring parts across anime, video games, and dubbing for foreign film and television. My Hero Academia's Tsukauchi stands as his most visible and enduring credit, sustained by nearly a decade of continuous casting on the franchise.
Tokuyoshi Kawashima voices Naomasa Tsukauchi, the lie-detecting detective who partners with the pro heroes, in every season of My Hero Academia since its 2016 debut. It is a steady, procedural voice that anchors the show's more grounded detective-story scenes.
Yes, Kawashima's Tsukauchi carried over into the 2025 spinoff My Hero Academia: Vigilantes, with a second season of that show planned for 2026. It makes Tsukauchi one of the longest-running roles of his career.
Tokuyoshi Kawashima works under the talent agency 81 Produce, which has represented him across his voice acting career in anime, video games, and dubbing work.
Kawashima has worked as a voice actor since the mid-1990s, mostly in supporting and recurring parts across anime, video games, and dubbing for foreign film and television. He was born in 1973.
Tokuyoshi Kawashima is Tokyo-born, part of a voice acting career that has run since the mid-1990s. That steady body of work has made Naomasa Tsukauchi one of his most enduring roles.

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