A washed-up sword teacher gets dragged back into the world he left behind, except now his old students run the kingdom. The show knows exactly what it's doing with a protagonist who's genuinely skilled but completely content to have stopped wanting anything, then forces him to want something anyway. That tension between a man at peace and a world refusing to let him stay there is the whole thing.
A grizzled sword instructor spends his days teaching basic forms to village kids, convinced his glory days are long dead. That comfortable obscurity shatters when a former student arrives with an offer: come train the Liberion Order's elite knights. Beryl protests that he's just a humble old man with nothing left to teach, but he's dragged to the capital anyway. What he finds there shakes him. His old students are now legends: decorated knights, a powerful wizard, adventurers who've reached the highest ranks. They're impossibly skilled, yet they all insist they need his instruction. They claim he's their secret weapon, the master who shaped their foundations, but Beryl sees only the gap between what he is now and what they've become. As Beryl reluctantly settles into his new role, he discovers that becoming a living legend is nothing like the adventure he once dreamed of. Between stubborn students and relentless expectations, finding peace proves harder than mastering any sword technique ever did.