Shitai Katsugi no Nemu

After getting lost in a dungeon, Garen meets Nemu, a "corpse bearer." A "corpse bearer" is someone who goes to dangerous places such as the depths of a dungeon, a beast's nest, or the bottom of the sea to retrieve the bodies of those who have died. Responding to the cries of those bereaved who say, "I don't care if they're dead, I just want them to come back," Nemu continues to travel to dangerous places and return today carrying corpses. This is the story of a dungeon "corpse bearer" who walks around carrying the resentment of the dead.

(Source: Shinchosha, translated)