Four washed-up heroes trying to pretend their old lives don't exist, until a pint-sized demon king shows up to ruin the bit. The joke is that nobody wants to be special anymore, they just want to drink coffee in Kyoto and exist quietly. When the movie refuses to let them have that peace, it finds something genuinely funny in the gap between who they were and who they're desperately trying to be.
Four middle-aged men living ordinary lives in modern Kyoto share a secret: they're retired heroes from another world. Decades ago, they defeated a demon king and thought they'd earned their peace. That illusion shatters when a pint-sized elementary schooler barges into their routines with shocking news. She's their old nemesis, reincarnated and furious about her defeat. What makes matters worse, she's not interested in revenge,she wants something far more inconvenient: their help solving her current problems. The film plays this high-concept setup for maximum comedy. Four guys desperately trying to live anonymous lives suddenly dragged back into a world they'd gladly left behind, all because of a kid who happens to be an immortal demon lord with an attitude. Their banter flows naturally, built on the kind of camaraderie only comes from having fought apocalyptic battles together. The tone stays light and playful even as it pokes at what happens when adventure doesn't end gracefully but simply transitions into the boring, mundane reality of adulthood. It's a comedy that understands the absurdity of heroes getting old.