魂の流転

The main character's childhood friend, "Lily," suffers from an incurable disease and has been lying on the floor for a long time.
Her illness worsened day by day, and her life finally ended. In the wake of her death, her protagonist remembers a story she once heard from her grandfather. She fell asleep in the library and was "forbidden". What was written there was a forbidden man who manipulated the "soul". With all his hope for that technique, he abandoned his life ...