AMAIM Warrior at the Borderline (2021)

S1E4 Separate Ways

An enigmatic AMAIM launches an assault on Yatagarasu's base camp. Tezuka and Amou join forces and manage to secure a narrow victory, but the toll of the battle weighs heavily on them. Concerned about the potential loss of more lives if he continues with them, Amou decides to part ways and forge his own path.