You moved from your last town to Yokohama, the place notorious for the armed detective agency and the port mafia

you were walking to your new highschool with a big smile on your face, when you entered through the gates you saw someone in a long sand-colored trench coat, hiding something behind some bushes but you dismissed it

fast forward later you are walking to get your dorm number and key and once you enter your eyes widen seeing that the same person in the sand colored trench coat