Kenichi works because it commits to the full journey from pathetic to competent, and actually lets you feel every embarrassing step of it. The six masters are weirdly distinct enough that you genuinely want to watch him get destroyed by each one separately, and the comedy lands hardest when Kenichi's trying to survive something that would kill a normal person. This is a show that knows a weak protagonist getting stronger is only funny if you believe he was actually weak to begin with.
Kenichi is a scrawny high school pushover who gets bullied daily and has zero confidence in himself. Everything changes when he meets Miu, a kind girl who lives at her family's martial arts dojo, and he becomes determined to transform himself into someone worthy of her attention. The catch: she lives with six masters who represent completely different fighting styles, and they're more than happy to use Kenichi as their personal training dummy. What follows is brutal comedy as this weak kid gets systematically pounded into shape by masters ranging from sumo wrestlers to kung fu experts. Each session leaves him bruised and questioning his life choices, but slowly, impossibly, Kenichi actually starts getting stronger. He begins standing up to his bullies, making real friends, and discovering that beneath his pathetic exterior lives genuine potential. The show balances laugh-out-loud humor with legitimate martial arts action as Kenichi stumbles toward becoming confident. His journey from total zero to someone who can actually hold his own resonates because his growth feels earned through relentless, hilarious suffering.