Yusa Kuoji, whose name is correctly rendered as Yusa Koji, is a veteran Japanese voice actor and narrator born on August 12, 1968, in Kyoto Prefecture. He began his career after graduating from the Katsuta Voice Actor Academy as a seventh-term trainee, making his professional debut in 1993 with a minor role in the anime The Brave of Gold Goldran. He was initially affiliated with the agency Office Kaoru but soon left to work as a freelancer, a status he has maintained throughout most of his career.

Yusa Koji has built a reputation for his versatile and distinctive vocal quality, often described as偏高而充满色气, which conveys a sense of allure and sophistication. This allows him to portray a wide spectrum of characters, from handsome young men to冷酷、狂妄、轻薄、阴险的反派, or cool, arrogant, frivolous, and villainous roles. He is also noted for frequently playing characters who keep their eyes closed, such as Gin Ichimaru in Bleach, Lau in Black Butler, and Ayumu Tōjō in Gintama. His skill with his native Kansai dialect is another hallmark of his performances.

Among his extensive and renowned body of work, several roles stand out as particularly iconic. He is widely known for his portrayal of the enigmatic captain Gin Ichimaru in the long-running series Bleach. He also gained immense popularity for his role as Urataros, one of the Imagin, in the tokusatsu series Kamen Rider Den-O, a performance that contributed to a shared special award at the 2nd Seiyu Awards in 2008. In video games, he is the established Japanese voice of Shadow the Hedgehog in the Sonic the Hedgehog series. His other major anime roles include Fubuki Tenjoin in Yu-Gi-Oh! GX, Hyobu Kyosuke in The Unlimited: Hyobu Kyosuke, Sanosuke Harada in Hakuoki, Akira Midousuji in Yowamushi Pedal, and Lau in Black Butler. As a testament to his ongoing activity, he has also been cast as Byakuya in the 2020s for the game Genshin Impact.

His involvement in the anime series Forest of Piano (Piano no Mori) confirms the role mentioned in the query. In this musical story about young pianists, Yusa Koji provides the voice for the character Saga Takeshi.

In addition to his anime and game work, Yusa Koji is active in narration for variety programs and radio dramas. He has also hosted radio programs, such as Shukan Yusa Koji, which helped him connect with his audience. Throughout his career, he has developed recurring professional relationships, frequently co-starring with fellow voice actors like Toshihiko Seki, Kenichi Suzumura, and Masaki Terasoma, most notably in the Kamen Rider Den-O franchise. He is also known to be a close friend of voice actor Kousuke Toriumi, with whom he often shares social gatherings. His contributions to the industry were further recognized when he received the Overseas Fan Award at the 14th Seiyu Awards in 2020.