Well my dude, incestuous isn't the right word so i don't understand why you would bother using it It's like saying, man, I really want to photosynthesise with you and I know it isn't the right word but I can't vibe with you like a normal human being.
Anyways, to my understanding, you aren't comfortable with the age difference right? Cus it's with a minor. Totally understandable.
Yeah basically the age yes and the girl seems really inconfortable so a time skip and them being apart for some time will look less like : she was waiting for him to be 18 (cause it's bit weird if you know what I mean). Because if they started a relationship right now it would be wrong on some levels but go off I guess I'm not the author...
They're relation feels so incestuous, I know they aren't related in any shape or form but I just can't vibe with it... Maybe it's because she's taken care of him he's only 16, only time will tell us if they. If they do a time skip to like 3-4 years in the future, maybe my views will change ╮( ̄▽ ̄)╭