Well ive been looking for it for the past 3-4 months and cant find anything on it, it used to be on a site called doujintoshokan. Well anyway its about mother and son incest, i'll describe it as good as i can remember. The mother comes back after leaving her son for a long time. She moves back in but the son feels angry i guess? He pull her on the ground, and i think he was saying mommy butt i believe. and yeah he does it with her. I remember a flashback in the manga of where she was with her son when her was little and before she left. he pulled his pants down and he started rubbing against her while they where in bed. She jerks him off while he there and says "he so cute". Later on there is another scene about how he puts his big toe in private area during dinner. and later again when the father was leaving the mother couldn't take it anymore so she pulls his pants down in the elevator and gives him oral. the half sister comes to them soon after i think. and she catches the her mother and half brother do it. and she joins in

Also there is a little sister who the father is trying to get custody from dead beat father from.
i believe there is to alternate ending i think. one where the daughter shows up and the fathers door and when where she joins the mother and son.

really appreciate if you could help, thanks 😀

I know this one, give me some time and post the name.

[Hacchi] Demodori Mama (Mommy Who Left And Came Back) it's in this book : Oasis

thanks so much!
😲