Spirit Catching Chronicles

Don't come to me when thinking about this matter. I just want to eat and wait to die. Yes, this is the heroine. When the soul travels to the real world, how should it choose when faced with the memory of the original host, the feelings for family and lovers, and its own responsibilities? How is the wealth of knowledge in the world disappearing? Should we choose to keep valuable ideas or treat all ideas equally? How to judge valuable ideas?