Kenichi: The Mightiest Disciple - Season 1 Episode 50 The Mightiest Disciple, Kenichi! From Wimp To Warrior. Sort of.
Overview: Cornered by Kenichi's unexpected reaction, Ryuto utilizes a dangerous technique to rise up his power beyond his body's limits, and the reason for his grudge on him is revealed. As their fight comes close to a conclusion, Kenichi continues determined to win, not only for his own sake, but for his childhood friend's too.