Fire Fox Tochionger Seven S01 E05 05. Jun! I Never Do It!

Gedron, the leader of the Snake King Clan, declares that "now is the perfect opportunity to corner Tochiongar Seven!" and launches a large-scale invasion. Tochiongar Seven faces off against one combatant after another. Then, the combatants he defeats transform into humans! Jun witnesses this and brands Tochiongar Seven as a murderer.