She was a very popular exorcist, and he was a vicious and bloodthirsty ghost.
All the bonds and all the imprisonments are because of the disaster thousands of years ago. His obsession with immortality turned into the consequences of reincarnation, and his deep resentment turned into an immortal soul, killing people like hemp.
But he still remembered those eyes from thousands of years ago, with crystal clear eyes that lasted for thousands of years.
That was his only obsession after all these years.
He thought she was being imprisoned, but in the end, it was him who made a cocoon of himself, drawing the ground as a prison.
Intent: Love that moves heaven and earth and unchanging kindness.