Kairyuu to Yuubinyasan

Synopsis

A young Paldean girl named Hana dreams of becoming an elite mail carrier, inspired by the postman Dragonite. Her resolve is tested when an undeliverable letter arrives. Teaming up with her partner, Hogator, Hana sets out on a quest to find the letter's mysterious sender. Their search leads them to Rio, a boy who penned the letter to honor his father's birthday. Unfortunately, his father is stationed far away in the Kanto region, and time is running out before the special day arrives.