Ok guys so marinette and deku are child hood friends. And they were separated from each other when Izuku was 4. Izuku does not know where Marinette moved too.
Right now deku is in UA and I forgot to mention Marinette has a quirk but forgot about everyone else's quirks she still remembers deku
The reason why Marinette left was because All for one had killed everyone one of Marinettes relatives but once found out Aizawa was taking care of her and all the other pro hero's he threatened to kill them if she did not leave Japan and that is why every pro hero is depressed.
