Story elements are fine, English is okay, (some typos and rough spots, but fine for non-native proficiency) but the character motivation seems pretty weak. Why do any of the women go along with this? Sure, the FMC might feel some guilt about what had happened, but she isn't inherently responsible for it. She left (cheated on?) the guy. It happens. She didn't go about and wreck his life. Plus, she acquiesced to MC prior to even knowing MC's relationship to her past. So the MC had a rough childhood? Sucks, but the FMC didn't kill his mom (what a sad sack the mom had to be; went and had a kid with a guy so hung up on an ex) or maim him. The MC's motivation comes across as weak too. He might have developed some psychopathic fixation on her due to the chain of events, but he his own description of why he's doing this doesn't align with that motivation. If he idolized the dad, it would make more sense, but dad's a loser and did loser things? Why is that the FMC's fault? Besides, if your motivation is to cause someone to suffer, you don't tell them that up front.

Base +14

Volume 2 : https://e-hentai.org/g/4028353/7a68f21554/

Base +2

@WhiplashSmile
What the fuck are you talking about? The English is terrible. It's not just a matter of typos, there are obvious issues regarding basic grammar structure. The uploader is a known MTL'er.

Base +7