Ryotaro Sakaguchi: Japanese Actor and Profile

Ryotaro Sakaguchi (坂口涼太郎) is a Japanese actor born on August 15, 1990, in Hyogo Prefecture, Japan. Standing at 171 cm with blood type B, he has built a diverse career appearing in numerous film and television drama productions.

Ryotaro Sakaguchi promotional portrait — Ryotaro Sakaguchi

Career and Filmography

Ryotaro Sakaguchi has taken on a wide range of supporting and character roles across Japanese cinema and television. His early film credits include playing Satoru Murakami in Shodo Girls!! Watashitachi no koshien (2010) and Hiro Kinashi in the Chihayafuru film series (2016). Over the subsequent years, he appeared in high-profile projects such as High & Low The Worst (2019), Stigmatized Properties (2020), Sin Clock (2023), and Under Ninja (2025) as Eita.

In television dramas, Sakaguchi has maintained an active presence across multiple Japanese networks and streaming platforms. Notable television appearances include roles in Suits (2018), Beshari Gurashi (2019), Terror Newspaper (2020), War of Traps (2023), Billion X School (2024), Acma: Game (2024), and Netflix's Viral Hit (2026).

Film Credits

Shodo Girls!! Watashitachi no koshien (2010) - Satoru Murakami
Chihayafuru Part 1 (2016) - Hiro Kinashi
Chihayafuru Part 2 (2016) - Hiro Kinashi
5 Million Dollar Life (2019) - Tsuchiya
High & Low The Worst (2019) - Sabakan
Kiss Him, Not Me (2020) - Sakashita
Our Story (2020) - Nonaka
Stigmatized Properties (2020) - member of comic duo Nikushensha
Sin Clock (2023) - Daigo
Honeko Akabane's Bodyguards (2024) - Tokinori Senzaka
Acma: Game: Final Key (2024) - Mitsuru Aasi
Secret: A Hidden Score (2024) - Shinnosuke Hirose
Under Ninja (2025) - Eita

Selected Television Drama Credits

The Hours of My Life (Fuji TV / 2014) - Nagai (ep.11)
Suits (Fuji TV / 2018) - Kentaro Yagita (ep.1)
Inugamike no Ichizoku (Fuji TV / 2018) - Suketomo Inugami
Beshari Gurashi (TV Asahi / 2019) - Shuichi Uchikawa
Suits Season 2 (Fuji TV / 2020) - Kentaro Yagita
Terror Newspaper (Fuji TV-Tokai TV / 2020) - Tomo Katagiri
Teppachi (Fuji TV / 2022) - Atsushi Watanabe
War of Traps (Fuji TV-KTV / 2023) - Eita Kainuma
18/40: Unbreakable Bond of Dreams (TBS / 2023) - Kazuya Motohashi
Ossan's Love Returns (TV Asahi / 2024) - Iruka Haganezawa (ep.9)
Acma: Game (NTV / 2024) - Mitsuru Aasi
Billion X School (Fuji TV / 2024) - Nobuo Mizoguchi
Viral Hit (Netflix / 2026) - Pinguri (ep.3-4)