Leer and Guoguo

On Green Island, a flower delivery boy named Guoguo lives a life about as heroic as it sounds. He spends his days daydreaming about being something more, until he stumbles across the Dragon Wing, an artifact that basically drafts him into becoming the next Dragon Rider whether he's ready or not. Spoiler: he's not. With an ancient evil called the Black Governor crawling back into the picture with a whole dark army in tow, Guoguo has to figure out how to go from "guy who delivers roses" to "guy who saves an entire island" real fast. This is a Chinese ONA that pulls from mythology and wraps it in a comedic, lighthearted tone with some romance mixed in. The vibe is somewhere between an underdog hero origin story and a fantasy comedy where the protagonist is clearly in over his head. Think of it like if Go! Go! Loser Ranger! leaned more into fantasy worldbuilding, or if Good Luck! Ninomiya-kun swapped its premise for dragons and destiny. There's also a bit of that reluctant-hero energy you'd get from something like A Herbivorous Dragon of 5,000 Years Gets Unfairly Villainized, where the comedy comes from the gap between who the character is and who they're supposed to be. It's a pretty easy watch: nothing too heavy, solid for when you want something fun with a fantasy adventure backbone and a protagonist you can root for without taking things too seriously.