Biography
Kōki Uchiyama is a Japanese actor and voice actor affiliated with the Himawari Theatre Group. Born in Saitama Prefecture, he began his career as a child actor at the age of three and made his voice-acting debut in the Japanese dub of A.I. Artificial Intelligence.
He is known for voicing Kei Tsukishima in Haikyu!! (2014), Tomura Shigaraki in My Hero Academia (2016), Toge Inumaki in Jujutsu Kaisen (2020) and Jujutsu Kaisen 0 (2021), Rui in Demon Slayer: Kimetsu no Yaiba (2019), and roles in Violet Evergarden (2018) and Horimiya (2021). He has also voiced D in Cyberpunk: Edgerunners 2 (2026), Toshiro Kamiya in Fool Night (2026) and Shinpei Gotō in Firefly Wedding (2026).
Uchiyama won Best Male Rookie at the 5th Seiyū Awards in 2011 and Best Voice Actor at the Tokyo Anime Award Festival in 2015.
