Teaa's manga / #Teacher x Student(8)

Found the age gal to be a bit weird.... Why is no one questioning that 21 y/o is dating a highschool student????? Like I may be too paranoid but boy is like 17 Like at least have a bit of concern?? I'm talking about the characters btw Like idk man focus on your major not minor Ok maybe I'm being a bit too paranoid the boy js already a third year so maybe it's a bit ok? Like I think it's not ideal but hey I mean no grooming at least right?