Koki Uchiyama is a Japanese voice actor who plays Gaku in Sakamoto Days, part of a career built on major leading roles in franchises like My Hero Academia and Jujutsu Kaisen.
Uchiyama voices Gaku in Sakamoto Days, bringing his established range to the character. The role joins a body of work known for tackling complex, morally shaded figures, a strength that has defined much of his career. His casting reflects the demand for performers who can carry both villainous and sympathetic material within a single series.
Affiliated with Himawari Theatre Group, Uchiyama won Best Male Rookie at the 5th Seiyu Awards and picked up a Best Voice Actor honor at the Tokyo Anime Award Festival in 2015. His major credits include Rin Itoshi in Blue Lock, Tomura Shigaraki in My Hero Academia, Meruem from Hunter x Hunter, and Toge Inumaki from Jujutsu Kaisen, alongside Roxas and Ventus in Kingdom Hearts and Neku Sakuraba from The World Ends with You.
Uchiyama voices Gaku in Sakamoto Days, bringing his established range to the character. The role joins a body of work known for tackling complex, morally shaded figures.
Uchiyama is widely known for voicing Tomura Shigaraki in My Hero Academia and Meruem in Hunter x Hunter, two of anime's most prominent villain roles. Both credits reflect his reputation for playing complex, morally shaded characters.
Beyond his villain roles, Uchiyama voices Rin Itoshi in Blue Lock and Toge Inumaki in Jujutsu Kaisen. His career, which began in 2003, spans a wide range of major shonen franchises.
Uchiyama voices Roxas and Ventus in the Kingdom Hearts series and Neku Sakuraba in The World Ends with You. These roles extend his work beyond television anime into major game franchises.
Uchiyama won Best Male Rookie at the 5th Seiyu Awards and picked up a Best Voice Actor honor at the Tokyo Anime Award Festival in 2015. He is affiliated with Himawari Theatre Group.

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