The protagonist gets lost and enters a wooden house. What comes into view is a diary. However, there is a paragraph of text in the diary. The soul left in this wooden house and the protagonist work together to clean up the last wish of the soul that does not want to be reincarnated. But his last wish is that someone is willing to accompany him...
Concept: Love can transcend life and death, and can also reshape existence.
True longing will eventually make the soul traceable, allowing the invisible person to be seen again.