Letter Bee is set in the world of Amberground, a world of perpetual night only illuminated by an artificial sun. Lag Seeing, a newly minted delivery boy, called a “Letter Bee”, works at the Bee Hive delivery service with his Dingo Niche, and his pet Steak, delivering letters and parcels across Amberground while avoiding the Gaichuu, giant armoured insects who attempt to feed off the “heart” that reside within these letters and packages.
There is a lot more to things going on though, such as Lag Seeings mother disappearing at an early age and his search to find her, then his mentor disappearing at the same time, and an anti-Letter Bee agency called “Reverse” coming into existence, stealing letters and packages from delivery boys… this is surprisingly a story of heart, with super likeable characters, lots of cool action scenes, and equally funny moments.
A worthy watch, and you can for free at Crunchyroll using the link above! Message me for a 48 hour premium code.