spoilers
well...both characters have their own flaws that they work it out (somewhat) and the age gap I think 4+ years? hyung was a high school teacher for mc, but now mc is in his early twenties and hyung is around 28?
problem is mc has a childish personality or more of a selfish one that sometimes make you think yeah that fucker is definitely in his early twenties
another thing hyung goes back and forth between "I love mc..." " I CAN'T date mc I was his high school teacher!!! that's creepy!!" tbh this didn't bother me as much because yeah mc is childish but he is also manipulative and somewhat calculating and that shit doesn't come from a "child" that hyung think he might be grooming
this might not be for you. (spoilers)
the age gap is nine years and the bottom was the top’s hs teacher once. the top is childish and manipulative while the bottom even says he may never get over his guilt falling for him. another con some ppl might have is that their relationship is slow moving (doesn’t become the focus until past the main story) and the bottom sleeps around. that said, the story is solid, the characters are charming, and it can get painfully realistic.

I want to read this can somebody tell me if it’s a red flag bl or have a weird age gap