Old man bottom

Saenai Oji-san to Ore-sama Yankee-kun

https://www.mangago.zone/read-manga/saenai_oji_san_to_ore_sama_yankee_kun/

how old are you thinking?

Thank you!!

Maybe 40-60

Pretty sure they're all 40+
Saezuru Tori wa Habatakanai
Anata wa Iyarashii Hito
Coming - Niyama
Joou to Shitateya
Eiffel Tower
40 Made ni Shitai 10 no Koto
Ikeoji Monster to Zettai Reido Danshi
Old-Fashioned Cupcake
40 x 40 Chikuwa Kaigi
Wadatsumi no Yometori
Mitsuya Sensei no Keikakuteki na Edzuke
Daddy Darlin'
Twilight Cure Important
Help Me, Uncle
I Want to Spoil Ikuro-san
Ryouomoi nante Joudan ja Nai!!
Aien Catharsis

https://www.mangago.zone/read-manga/boku_no_omawarisan/
Idk if you have read this before but basically most of this creator's works are older ukes and their works are chef's kiss

these ones are really goood!!

https://www.mangago.zone/read-manga/mitsuya_sensei_no_keikakuteki_na_edzuke/

https://www.mangago.zone/read-manga/old_fashioned_cupcake/

https://www.mangago.zone/read-manga/the_monster_and_the_beast/

https://www.mangago.zone/read-manga/otoko_yamome_mo_hana_ha_saku/

Oni to Tengoku = both seme and uke are grown men, uke looks older
Naked Sword and the Tree Peony of Black = seme and uke both grown men
Young Good Boyfriend = young seme, old man uke
Sensei Shokushin Shite Kudasai = seme and uke both grown, uke looks older and is super slutty lmao i love him
Far from Romance = seme and uke both grown men, my fav from this list, seme is super pretty, not toxic at all