Kouki Uchiyama (内山昂輝)

Tsuyoshi Naoya (Kouki Uchiyama) is a Japanese performer whose credit appears across anime-related music listings, catalog records, and voice-cast announcements. Born in Saitama, Japan, on August 16, 1990, he is listed under this name in a range of entertainment records, making the profile useful for connecting his anime and performance work under a single entry. In 2026, his name was also attached to several projects, including BEYOND DAWN, the voice comic for Gas lamp Detective Club, the TV anime Fool Night as Toshiro, and the TV anime Unmei no Maki Modoshi as Shirai. These credits help document his ongoing presence in anime-linked releases, character work, and related collaborations.