C49 Rest, Rest, My Ass!!
"This method was guessed by me. In this world, there is a cycle of karma. Everyone's Elemental Soul appears in the form of a tree, so it must be related to the tree. The tree absorbs nutrients to grow, and there will be a day when the leaves fall. The leaves fall back to the roots and turn into nutrients, which will be absorbed by the Elemental Tree again. This is a cycle