Kyougoku ka no kekkon :: arranged marriage –non-twinky bottom/no big size difference
Samezoku w no sasagemono :: not married but get married in first 1 or 2 ch. so most life is married life. –virgin4virgin, buffbottom, one of my fav smut and love story even tho it's kind of sexist but i love the couple so much i reread3it 4 times last week for some reason. tan bottom as well.
https://www.mangago.me/read-manga/omaede_dame_nara_moudameda/ :: not married but get married in the manga, and also has story after it. –no big size diff,old men yaoi.
Off track crush :: not married but engaged(but they both silly so they don't know it and forgot it lmao), and get married and side stories after they get married.– virgin4virgin, buff bottom.
https://www.mangago.me/read-manga/shima_chanchi_no_tsugaijijou/ :: married in present timeline + tells story on how they met. also, have a kid as it's omegaverse. – pretty yet non twink bottom, no big size diff, virgin4virgin, enemies2lovers
https://www.mangago.me/read-manga/pygmalion_1/ :: not married but get married, side stories after they get married. + vers couple as well. – also buff couple, virgin4virgin.
https://www.mangago.me/read-manga/imoogi_and_the_woodcutter/ ::not married but get married. –non human seme, buff bottom, virgin4virgin.
https://www.mangago.me/read-manga/special_benefits_for_newlyweds/ :: they get married for convenience. –virgin4virgin. bottom NOT buff unfortunately :(
https://www.mangago.me/read-manga/nichijou_climax/ :: not married but established relationship. virgin4virgin, old men yaoi, buff bottom.
dog's mask :: married, buff bottom (not twink, although he's a bit leaner than seme), alpha x alpha, omegaverse, slightly older uke, not too much older tho.
one room ta :: not married but established relationship. - virgin4virgin, non twink bottom (?i think at least, he's not super twinky or anything, js a bit shorter than seme), 3 yr age gap.
Tysm broski woski!!!
IMOOGI AND THE WOODCUTTER MENTIONED DROOLS
yaoi with the mc and ml is already married or engaged pleasee, can be manhwa and manga ლ(´ڡ`ლ)!