Responses
http://www.mangago.zone/read-manga/nichijou_climax/ this came to my mind first but i just read they were more on the early 30s.. you might still like it so im gonna link it anyway ^^
There's an age gap in this one. They're like 30 and 40.
http://www.mangago.zone/read-manga/boku_no_omawarisan/
Does anyone have recommendations for yaois with older couples?? I'm talking about like guys aged in at least late 30's to 40's haha thanks in advance (๑•ㅂ•)و✧