https://www.appetite-game.com/apt_184.html
https://vndb.org/v30787

http://www.getchu.com/soft.phtml?id=1128581
https://www.dlsite.com/pro/work/=/product_id/VJ014438.html

Base +22, gorack244 +6, georgenorthern +5

So I guess this is double cheating? MC cheats on his girlfriend with her mother that is still married to her husband?

Base +7, gorack244 +6, Jizz23 +6, observer1980 +21

MC come home to discovered that his father and his wife are fucking. Fainted.
When he wake up, his step-mother, marriages his father for 2 years already, propose that they should get revenge on the other by, you guess it, fucking each other.

p.63 guess that is the swap ending.

Base +8, ALNu +7, HodorHodor +9, gorack244 +6, georgenorthern +5, your_name +6, Jizz23 +6, bigscuba +7, PervyYoungman +7, reduzume +6, kemono69 +8

would love to have character set plox!

Base +6, gorack244 +6, observer1980 +21

I genuinely thought it was father in law X daughter and son in law X mother in law.

Base +3, gorack244 +6, observer1980 +21

why do i feel the ladies plan this out. like on purpose so they could fuck MC/father when they want XD.

Base +6, gorack244 +6, observer1980 +21

男主还能被调教，剧情好评

Base +6, gorack244 +6, yp123 +6

MC come home to discovered that his father and his wife are fucking. Fainted.
When he wake up, his step-mother, marriages his father for 2 years already, propose that they should get revenge on the other by, you guess it, fucking each other.

Step-mother set their relation as contract to get revenge, so they are equal partners.

After some days of fucking behind other back they set up a group fuck, step-mother wear mask while the wife had blind fold, after awhile they revealed themself.
Wife shocked say "sorry" repeatably.
Step-mother said lets mc decides, said all this because of the dad put his hand on the wife so he has no say.

If mc chose step-mother, end with mc sucking step-mother pregnant tits while jerking mc off, p.68 mc kind of play spoils with her as he calls her "mama" while sucking her tits, at the end game shown "Happy end."

If mc chose wife, wife would ask to have sex every day as apology, the sex is not that bad but mc loss felling after so many time, mc run to step-mother room, beg her to be with him again.

Step-mother said she already told him that he could only chose one, the other relationship would end, mc said he would do anything to get back with her.
Step-mother asked back "Really? You would do anything?" mc confirmed.
p.71 end mc become dog for step-mother. Because he said "anything" step-mother set their relation as contract of "Master & pet", at the end the game shown "Happy end?"

LOL

Base +8, TheUnforeseen +6, gorack244 +6, georgenorthern +5, hairdo +7, your_name +6, Jizz23 +6, nowittycomment +14, kemono69 +8, NovaSiva +6

Is that what’s happening on pages 53-73, the English version of the Title is “ I’m Cuckold By My Mother-in-law ~ It’s Good If We Show Off”, so I thought the stepmother was actually his mother in law and that the whole thing was some evil plot created by her. Like she corrected the wife and convinced her to have a affair with her father in law.

Base +6