Tegami Bachi  

bee, lb, Letter Bee, Letter Bee TV, Mektup Arısı, Tegami Bachi: Letter Bee, Пчелиная почта

Although Lag Seeing lost everything and his mother passed away, he now has a friend named Gauche Suede who was assigned to deliver his mail. Despite their initial struggles, they become close friends. Through this friendship, Lag realizes that his purpose in life is to convey people's most important emotions through letters, just like how Gauche does it.