It's not much but considering but he has some wrinkles in his face
https://www.mangago.me/read-manga/the_monster_and_the_beast/
This one has receding hairline (the plot is really good tho) https://www.mangago.me/read-manga/sleeping_dead/
Also idk if my last comment posted but there's
https://www.mangago.me/read-manga/the_monster_and_the_beast/
He has wrinkles
https://www.mangago.me/read-manga/on_doorstep/
https://www.mangago.me/read-manga/oni_to_tengoku/
https://www.mangago.me/read-manga/reizoku/ (and a few other works from this author)
https://www.mangago.me/read-manga/boku_no_mama_chan_43_kaihatsu_nikki/
https://www.mangago.me/read-manga/don_t_call_me_daddy/
https://www.mangago.me/read-manga/suki_ni_nacchau_yo/
https://www.mangago.me/read-manga/suterare_omega_wa_nido_naku/ (it's weird tho, he raised him)
I'm on the hunt for visibly older ukes like wrinkles, facial hair, etc etc... if yall could help a girl out it'd be much appreciated