Yoki's mother

Not much is known about Yoki's mother; even her name isn't revealed.

Plot
The unnamed woman's first and only appearance is in episode 12. She can be seen walking with her son, Yoki, through the woods, though they appear to have taken a wrong turn. Yoki sees mushi on the way and gets scared, but is comforted by his mother. She doesn't seem to possess the ability to see mushi and tells him that it was nothing but his imagination.

Later, it is revealed that she dies. The circumstances of her death were unknown, but her body is seen beneath a pile of rocks, indicating that she had been caught up in a landslide. Yoki survived with minor injuries, and is seen beside his mother's corpse only to be guided away by mushi. The status of her corpse remains uncertain, but it most likely is still under those rocks.