25 and 13? boi i sure hope we get a time skip, probably not gonna happen doe... and yeah i know, older society they become adults at 15, etc; still 13 is a bit too young, maybe if the dude was 17 or 18, that way there can be a friendship for the 3 years and the drama can start when she's 16 and he 20, that seems more pausible for manga standarts