Wdym? Main couple looks exactly the same, judging from Seme appearance in first chapter (I will not pretend I remember all those names hahaha). Kids are growing, it’s even shown how little fella starting to be independent and dress himself. Did you by any chance mistook grandfather with his lover with main couple?
it is just a few lines, but they shouldn't look like they are in the 40s already when we saw them in their 20s at the start of their stories (when they met in a previous book) like they should get older but the kid's speed of growth to the parents seems slow. like i would have liked the kid to be a little bit bigger and taller to match his parents. i know the differences since i been reading.
i am a bit annoyed, not because they are older, but rather their kid is still young. they adults aged up much faster than any offspring they have. i would like to see their kids grow with them.