Tegami Bachi : letter beeVolume 16,: Wuthering heights
Part of the Tegami bachi series
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.