WISPTALE- A Tree of Dust

A soul that has been half dead for a long time can have a second chance. There used to be many Whisps that had either turned and or been born that way, but now in the current Underground there are none, they were all killed in the war, and rather than monsters becoming Whisps from being in a certain state for so long, monsters have just been falling down and everyone has forgotten about them. But Sans has been suspended in resets for so long his HP has gone down to 1 and he feels hopeless, but stays strong for his brother, but what happens when his soul passes the point of no return, even unable to be restored by the resets.
The cover of this story is my art, and this is my Au.