Yuki Kaji is a prominent Japanese voice actor and singer born on September 3, 1985, in Tokyo, Japan. He is affiliated with the talent agency VIMS and began his career in 2004, making his anime series debut in 2006. His journey into the industry began after passing a free newcomers' audition held by Arts Vision, which led to his enrollment in the Japanese Narration and Acting Institute.

Kaji's career features a wide array of notable roles in major anime series. He is widely recognized for his portrayal of Eren Yeager in the global phenomenon Attack on Titan, a role that demanded intense vocal performances. Other significant leading roles include Issei Hyodo in High School DxD, Shū Ouma in Guilty Crown, Alibaba Saluja in Magi: The Labyrinth of Magic, and Meliodas in The Seven Deadly Sins. He has also voiced Kenma Kozume in Haikyu!!, Yukine in Noragami, Shoto Todoroki in My Hero Academia, and Clemont in the Pokémon XY series, among many others. His filmography demonstrates a remarkable range, encompassing characters from the vengeful Eren to the comedic Nishikata in Teasing Master Takagi-san.

Throughout his career, Kaji has received numerous accolades that underscore his talent and impact on the industry. He won the Best Rookie Actor award at the 3rd Seiyu Awards in 2009. He then achieved consecutive wins for Best Lead Actor at the 7th and 8th Seiyu Awards in 2013 and 2014. His performance as Eren Yeager also earned him the Best Voice Actor award at the Tokyo Anime Award in 2013 and multiple Crunchyroll Anime Awards for Best VA Performance (Japanese) in 2022 and 2023.

In addition to his voice work, Kaji has been involved in music as a member of the singing group G.Addict and has released his own music. He has also hosted a web radio show titled Yuki Kaji's Monologue since 2014. To commemorate his 20th anniversary in the industry, he launched the "Soyogi Fractal" project in 2023, which includes a manga, merchandise, and a voicebank. His body of work and the recognition he has received firmly establish him as one of the leading and most versatile voice actors of his generation.