This is the one that pays you back for sitting through 50 episodes of Kenichi eating dirt at Ryozanpaku. The TV anime left the manga hanging, and these bundled OVAs finally let the story move past it, which means the payoff only lands if you already know why Apachai's hugs are terrifying, why Akisame's logic hurts worse than his joint locks, and what Miu's smile does to Kenichi's spine. Fair warning: the early ones run dry and talky, and the back half sprints, so treat it less like a series and more like a stack of chapters someone animated for the faithful. What sticks is the progression. The kid who used to flinch at Niijima's schemes now stands like someone who earned it, and the masters notice without ever saying it out loud. If you never trained with him, skip it. If you did, it feels like checking in on a friend who finally got strong.
Kenichi continues his relentless training under the six masters of the Ryozanpaku dojo, pushing his body and spirit to new limits. But as he grows stronger, darker forces begin to circle. The criminal organization that once threatened his school life resurfaces with renewed purpose, and this time their reach extends further than before. Kenichi finds himself caught between his newfound martial arts family and an escalating threat that tests everything he's learned. The training sessions grow more intense, the stakes rise higher, and he realizes that raw technique alone won't save the people he cares about. Between brutal combat sequences and moments of genuine humor, Kenichi discovers what it truly means to fight not just for himself, but for those depending on him. The underdog who once stumbled through hallways must now stand against an approaching shadow that refuses to be ignored.