テガミバチ

Description

Apparently abandoned by his mother, orphan Lag Seeing is taken as a "letter" by "Letter Bee" Gauche Suede to a town where his aunt raises him. His affection and admiration for Gauche give Lag the ambition to become a Letter Bee himself, carrying mail through the dangerous wasteland between towns on his world. When he becomes a teenager, he makes the trip to the capital to take the examination to become a trainee Letter Bee. En route, he meets the strange, powerful girl-like creature Niche, who becomes his "dingo," a Letter Bee's travelling companion. Lag yearns to find his mother, and discover why she abandoned him, if she did.

via ANN

Based on the 2006 manga, Letter Bee

Gauche is a governmental employee, given the task to deliver any letter to it's destination. Meeting a young boy who is the letter to be delivered, Gauche makes friends with Lag and inspires him to take up the job. Five years later, Lag Seeing finally becomes his dream, that of a Letter Bee. However, the one who inspired him has gone missing and only there does the mystery start.

via ANN