A boy who can never become human and a boy who can never live past the age of seven somehow find each other as adults and fight vengeful spirits together. This would have been a five if some of the unanswered questions or answered and if the ending wasn't rushed. Unanswered questions like where does he get his power from and how is he connected to the two kings also is he the same little boy as the 7-year-old boy (suggested but unclear) And will we ever see the cat with his full powers?
The Art of Taming A Tiger