It was so bad that I blocked it out of my memory, but someone else can probably name it for you.
Mum is MC, she has twin boys and a daughter. One boy is a dirty pervert; who wants to share his Mum with his friends, one is shy and sensitive.
Daughter is fine.
If it had a girl only path where Mum could ignore the boys and focus on the daughter, it would be fine, I guess?
I quit before it had any real sexy time, but if it's not abandoned there is bound to be some by now.
There are also possible shenanigans between the boys and the sister if I remember, but it's been quite some time since I played it.