|
Well, it's not an anime but you can try the manhwa Unbalance x Unbalance which is probably exactly what you're looking for. A drama about a student and his teacher. No aliens, no stupid excuse for getting together. Just a guy who really falls in love with his teacher, and she eventually for him.
There's a thread in the manga section. If you're curious, go and take a look.
I wouldn't include Spice and Wolf in the list despite the age difference because the female character's appearance is that of a younger girl. The age gap becomes illusory in this case and it doesn't really convey the theme you're going for.
Condor Hero, which I mentioned before, does involve this guy falling in love with his martial arts teacher, which is taboo in ancient China. They try to hide it at first, before the crap hits the fan. The series itself is an acquired taste since the quality isn't good. Moreover, I doubt you're looking for a kung-fu epic.
|