Kenichi: The Mightiest Disciple (2006)

S1E50 The Mightiest Disciple, Kenichi!

Faced with Kenichi's surprising response, Ryuto taps into a perilous technique to elevate his strength beyond what his body can handle, unveiling the source of his resentment towards Kenichi. As their battle nears its climax, Kenichi remains resolute in his desire to triumph—not just for himself, but also for the sake of his childhood friend.