Kazuki Souya è apparso in 3 serie e nessun film. Una performance da trovare nel ruolo di Ax User (voice) / Big Ax Wielder (voice) / Chair Man (voice) / Congregation of the Holy Swords Guild Member (voice) / Giant Worm B (voice) / Golem (voice) / Guild Member 2 (voice) / Kuromu's Companion B (voice) / Old Man (voice) / Player (voice) / Player 1 (voice) / Player 3 (voice) / Shadow (voice) / Third Son of Three Stars (voice) / Threesome C (voice) / Trio Third Son (voice) / Wen (voice) / Wizard B (voice) / Wolf (voice) nella serie BOFURI - Dato che non sopporto il dolore, metterò tutti i punti in difesa.