Hands down, was surprised how much I love this anime series. When I started to watch it, it remind me of Violet Evergarden with postal service. I love how this show was great adventure story/ scientific with little of slice of life mix into it, meaning that it had a lot of heart with the characters and story-line. That being say the story-line was very unoriginal meaning it wasn't just a boy going to postal service to deliver letters. It had alot of mystery around the main character Lae Seeeing and the whole Letter Bee service. Hands down I love this series and highly recommend toany one who loves slice of life mix with adventure.