Phantom Exorcists

The school has been shut down for many days, and the students have been observing the school from different vantage points. The school's senior, yang tian, wants to know what's going on at the school at night. He's curious about the bloodstains on the walls, and he's worried that the phantom is still hiding inside the school. The police have classified the incident as a "special case," and entrusted it privately to the agency. The senior wonders why the phantom didn't attack the third floor, and why there weren't any blood stains on the floor where he lost his arm. He wonders if the phantom was able to devour the entire school, and if it had to chase the student from the third-floor to the first-floor. He also wonders if there's something fishy about the phantom's ability to devour people in a single place. The only thing that seems fishy is that the student ran from the room where he'd been bitten by the phantom. He doesn't know why, but he can't figure it out.