Scooby-Doo: Mystery Inc.

Scooby, Fred, Daphne, Shaggy, and Velma are on a said to be Haunted Japanese grounds mystery. Shaggy and Scooby run into a boy who is about to be whisked away by the dragon ghost and save him. He tells them his name and says he knows a secret about the ghost' backstory and he tags along with shaggy and scooby. Not too long before the boy falls suddenly for shaggy, but will he be safe from the Dragon ghost?