They both involve using supernatural powers to discover a serial killer. There is a similar dynamic between ML and FL but reversed. Similar balance of humor and seriousness.
The main element of the show is tied to the mobile cell phone which is needed to communicate to the human world to solve the protagonist predicament ......
Each has a ghost needing to find answers. Both also have a scene that reminded me of each other. In Dear Prince ML ghost is pulled to FL on scooter since tethered to fob & in Delivery Man FL ghost gets pulled to car as if tethered to it.
