Its just a 4 year gap tho? It’s quite normal
17 and 20 is not normal it’s inappropriate. The other guy didn’t even graduate
*21
I started reading this when I was 18 and didn't mind it at all. Now it does make me uncomfortable, but the way the story developed is just too good. Occasionally I just think of the beginning of their relationship and feel bad for them both for various reasons but that won't take away from my personal rating of the overall manga.
Please read further if you haven't, after they are in an established relationship the story progresses in a different and interesting direction.
This story is rated way too high the age gap in the beginning is concerning.