old men ukes

20 y.o. step-nephew x 40 y.o. step-uncle.
Old man does not look that old most of the time, but his youthfullness is thematically appropriate and he's very pretty with his long hair, so he gets a pass.

Young-looking 60 y.o. vampire x 36 y.o. human potter bought by him in an auction.
Uke looks his age and fusses over being middle- aged and too old.
Smutty and sweet.

36 y.o. buff masc seme x 36 y.o. bartender uke with long-ish hair. Exes getting back together.
Uke looks his age and considers himself dried up. Seme is a manwhore who stops being able to get it up for anyone but uke.
Romantic, funny, nice smut.

29 y.o. subordinate x 39 y.o. boss.
Boss looks his age. He makes a bucket list of things to do before turning 40, including getting a lover. Subordinate learns about it, declares he will become his lover and help out with other things on the bucket list as well.
Sweet and gentle, a bit dramatic.

45 eyeglass shop owner y.o. x 45 y.o. inn owner. Reencounter, former friends with benefits. Seme had secretly loved uke the entire time.
These men do not look a day over 30, but they do consider themselves old men.
Dramatic, smutty.

No age specified, but younger puppy seme x older uke. Warning for modern slavery as the plot driver.
Loved the artstyle and the pathetic messy older man.