help theres this one where an bishonen old man is in the woods in a full three piece suit and he's traveling with this monster thing with long hair i forgot the name pleaseee help me
https://www.mangago.me/read-manga/the_monster_and_the_beast/
I think this is the one you're looking for?
anything higher is pushing it
if you're talking about the older guy, he's probably in his late 30s to mid 40s. remember that he raised his daughter from when she was a kid. the younger guy should be in his late 20s bc he was already a dentist in the beginning of the manhua.