Lupined Knight

First story of G.H.O.S.T. Kendal, Don, Stone and Hiro are a team of ghost hunters who had most recent lost their ability to interact with ghosts. Finally leading normal lives, the team attends the annual school camp and Don gets possessed by a malicious ghosts. To make things worse, the ghost inside Don seeks revenge on one of their school mates. With almost everyone ghost-blind, they must find a way to free Don from the possession and save their friend. Also a crossover with The Skill to Kill.