Cautious Hero: The Hero Is Overpowered but Overly Cautious (Kono Yuusha ga Ore TUEEE Kuse ni Shinchou Sugiru) is the 2019 Fall comedy isekai that nobody saw coming and everyone lost their minds over. Produced by White Fox across 12 perfect episodes, this single-season masterpiece takes the “overpowered protagonist” trope, cranks the caution dial to eleven, and somehow creates one of the funniest, most satisfying, and surprisingly heartfelt anime in recent memory.
Meet Seiya Ryuuguuin, summoned by the rookie goddess Ristarte to save the SS-rank difficulty world of Gaeabrande from the Demon Lord. Ristarte expects a brave, confident hero. Instead she gets a chiseled, dead-eyed perfectionist who refuses to leave the divine realm until he has trained for weeks, bought three sets of backup armor, and practiced every possible combat scenario against slimes a million times.
His first words upon arriving in the starting town? “Wait here. I need to grind for three days straight before talking to anyone.”
This is the entire show, and it is glorious.
Seiya is not just cautious. He is pathologically, obsessively, hilariously cautious. He throws away perfectly good armor because it “might have a 0.0001% chance of breaking.” He carries seventeen spare holy swords. He warms up for ten hours before fighting a single goblin. When Ristarte tries to rush him, he deadpans “Perfectly Prepared” and continues doing push-ups while the world burns.
And the best part? He is completely, absurdly, correct every single time.
Every precaution he takes ends up saving their lives later. The spare armor blocks a fatal blow. The extra training lets him solo bosses that should be impossible. The random potion he bought in episode two becomes the exact counter to the final boss’s ultimate attack. The show never punishes him for being cautious. It rewards him. In a genre full of reckless protagonists who survive on plot armor and protagonist privilege, watching someone win purely through insane preparation is the most cathartic experience imaginable.
Ristarte, the goddess who summoned him, is the perfect straight man (or straight goddess). She’s bubbly, emotional, and constantly screaming in frustration as Seiya ignores her completely to do another hundred thousand squats. Her descent from “proud summoner” to “exhausted babysitter” is comedy gold, and her voice actress Aki Toyosaki delivers one of the greatest tsukkomi performances in anime history.
The supporting cast is small but perfect. Ariadoa, the senior goddess who keeps facepalming at Ristarte’s choices. Mash, the dragonkin warrior who worships Seiya like a god. Elulu, the sweet dragon girl who just wants to be useful. Even the villains get moments to shine, especially the Demon Lord’s four heavenly kings who go from terrifying to tragic by the end.
Animation by White Fox is crisp and colorful, with fight scenes that somehow make watching Seiya parry the same attack for ten minutes straight feel epic instead of boring. The soundtrack leans hard into triumphant brass and ridiculous battle themes that perfectly match the tone.
What starts as pure comedy slowly reveals surprising depth. Behind Seiya’s paranoia lies genuine trauma from a previous world he failed to save. His caution isn’t arrogance. It’s survival. When the final arc hits and the stakes become real, the show transforms from laugh-out-loud funny to genuinely emotional without ever losing its identity.
The finale is perfection. After twelve episodes of Seiya refusing to fight the Demon Lord until he’s “perfectly prepared,” he finally steps forward with the most over-the-top entrance in anime history and delivers a beatdown so satisfying you’ll be cheering at your screen.
Final Score: 9.7/10 – Comedy masterpiece with a heart of gold
Cautious Hero is the rare isekai that knows exactly what it wants to be and executes it flawlessly. It’s a love letter to preparation, paranoia, and the absolute joy of watching someone be comically overqualified for everything. In a season full of generic power fantasies, this show stands out by making the power fantasy the joke and somehow making it the most satisfying version possible.
If you’ve ever wanted to watch a hero refuse to fight the final boss because he needs to do ten more minutes of warm-ups, this is your show.
Stream it legally on Crunchyroll or Funimation.
And remember: when in doubt, train for three more days.
You can never be too prepared.
Play
Season 1 (Sub)