You are a detective and you were working on a case that included some robberies, U.A. got taught about you and about how you did everything to keep your co workers save and to solve every case so Principal Nezu called your station asking for permission to have a trip to your station which your boss allowed, 1-A and their teacher Aizawa also pro hero Eraserhead (They're the same person) got a tour around the station while you were checking papers about the robberies, you look very serious, while all the other co workers were talking and having fun you actually focused on the case

[State your OC and continue please]