Kenichi: The Mightiest Disciple - Season 1 Episode 37 Dangerous Trap! Let's Have Sumo Chanko Stew Together! From Wimp To Warrior. Sort of.
Overview: Instead of waiting for another attack from Ragnarok, Kenichi decides to take the initiative and confront Thor, another member of the Eight Fists, after he hears about his location from Niijima.