
I think they're 20 and 29 if that makes it any better. Uke says he's been taking care of him since Seme was 9, I'm assuming that's when he saves him from a monster and mangles his ankle in the incident he mentioned which was 11 years from the present.
so if bottom is 29 presently he would have been 18 when he met the top at 9

This genre is fucking weird. I’m sick of this trope is it’s fucking disgusting and why reinforce how weird the dynamic is by making us visualize that clear age difference in how that would significantly impact how irresponsible it is that a parental figure is then made a love interest to their much younger partner of whom they should reasonably see as family at least or even pseudo child at worse.
18-29 AND he's known him since he was 9???? why just why would you want that