Yaoi NTR? Or swapping? Or whatever along those lines, I'm curious if it exists since it's ...

what's that? Another word for cuckoldry ╥﹏╥ plz explain

you mean cheating? yeah MRM has a shitload

It surely exist. Not a common kink, but oh boy, here you go with my faves :

Porn without plot - WARNING SHOTA :
https://myreadingmanga.info/tsukumo-gou-silver-frames-of-inner-hesitation-eng/
https://myreadingmanga.info/egami-onee-chan-to-otouto-no-himitsu-eng/

Porn without plot - WARNING RAPE/BLACKMAIL/MIND BREAK
https://myreadingmanga.info/unknown-unknown-senpai-to-kr/

A personal fave - PWP - WARNING RAPE/ BLACKMAIL /MIND MANIPULATION/ SEMI PUBLIC SEX
https://myreadingmanga.info/hone-shaburi-tei-nakaore-porkbits-hanashita-sakana-yowamushi-pedal-dj-eng/

This one is the first part of a series of 7 chapters plus 2 extras - not for the weak ones - WARNING RAPE / BLACK MAIL/ BODY MODIFICATION / PUBLIC SEX / MIND BREAK / FEMINIZATION
https://myreadingmanga.info/nengaranenjuu-kono-ai-wa-yamai-ni-niteiru-1-eng/

Pretty good -angst with happy ending - contains abuse, mentions of rape and manipulation - uke is not for everyone's taste:
http://www.mangago.zone/read-manga/doronuma/

This one is trash, uke is trash - happy ending I guess - he takes all the dicc:
http://www.mangago.zone/read-manga/nigai_no_theme/

the fact that i've read a bunch of those nengaranenjuu ones and enjoyed it

Ah I see, ur a man of culture as well.
Still a shame that he didn't share the boy with others tho ╮(￣▽￣)╭

Actually i'm a mushroom
AND LMAO i heard somewhere that the wife married him for the father and she knew all along

A mushroom cloud? I guess you have an explosive personality? (pun intended).

I herd that too, but I suppose It's only speculation since chapter 7 is the last one even in Japanese sites and there is no mention of the wife yet. Not impossible tho, u know how these pwps go, she either fucks her dad or finds him a good toy to play with. I ain't complaining either way

yeah, surprisingly you're the only one that ever acknowledges the second word in my username lmao :D

lol these stories are so wild that they're good

you just need to throw away common sense (like hOW DOES THAT FIT IN HIS ASS-) and just go with the horny flow because there's like no plot and the wife is only there as blackmail and embarrassment reasons LMAO

Thank you cultured people of mangago (▰˘◡˘▰)