Undertale but the protagonist is depressed and doesn't have determination but they make it through the underground after an attempted suicide via giant hole in mountain to put them out of their misery since they have a very painful incurable illness they make friends with the monsters but die at the very end after freeing the monsters in a true pacifist ending! Their soul color is grey due to depression with bluish green ooze coming out of small cracks in their soul via incurable illness!!