
Quick answer — Kanata Hongou voices Souji in Pokémon the Movie: I Choose You!, Ryouta Sakamoto in BTOOOM!, Naoyuki Andou in INUYASHIKI LAST HERO and 1 more characters.
Kanata Hongou voices Souji (Pokémon the Movie: I Choose You!), Ryouta Sakamoto (BTOOOM!), Naoyuki Andou (INUYASHIKI LAST HERO), Ryouta Mitarai (Danganronpa 3: The End of Hope’s Peak High School - Future Arc).
Souji is voiced in Japanese by Kanata Hongou.