
Quick answer — Issei Miyazaki voices Gen Nakaoka in Barefoot Gen, Sin Kiske in GUILTY GEAR STRIVE: DUAL RULERS, Takashi Yamazaki in Cardcaptor Sakura and 4 more characters.
Issei Miyazaki voices Gen Nakaoka (Barefoot Gen), Sin Kiske (GUILTY GEAR STRIVE: DUAL RULERS), Takashi Yamazaki (Cardcaptor Sakura), Kenji Ninomiya (Kamichu!), Phantom (Gasaraki), Chiein Fuu (Tenjho Tenge), Kazuto (Mezzo).
Gen Nakaoka is voiced in Japanese by Issei Miyazaki.