Amberground is locked in darkness.
A man-made star casts only a dim light over the land. The pitch-black wilderness is infested with Gaichuu–colossal insects with metal exoskeletons. The Gaichuu make travel between the cities of Amberground extremely dangerous. But thankfully the Letter Bees, a brave corps of messengers, risk their lives in order to keep the hearts of Amberground connected
- Cat. No.