What is the story called

Hello I’m trying to find this one manga/online story I read back in 2018-19 I think. I remember the story was a MC who lives with his dad and the dad brings a girlfriend who finds a liking to the mc. I remember the mc and stepmom get it in couple of times. I do remember the mc having intercourse with his friend or I think he didn’t. either way she runs to her dad who is a mob boss I’m pretty sure. also the stepmom has a sister who is pimped out by this ugly ass dude who grapes her too. the ending tho is the mc visits the stepmom who has his baby I’m pretty sure. thanks