Tegamibachi: Hikari to Ao no Gensou Yawa

Lag Seeing and his partner Niche receive a delivery for a woman named Elena Blanc, along with a letter for her brother. Their guide is Darwin, an old companion familiar with the hazardous route ahead.

Darwin’s frailty and determination soon reveal that this is more than an ordinary delivery. Amid attacks by giant insects and memories of a bond that has endured for years, Lag discovers the emotional responsibility carried by a Letter Bee and the painful meaning of the reunion Darwin seeks.