So what I’m understanding is that he found a another girl that look like his wife and sexual pressure her and after that she actually like the man that he was good at sex and being a father but dislike him because he was just thinking of her as ohta (souji wife). At the end he see that she a different person and not his wife and apologize to her.

This guy is so lucky that this girl gave him a second chance to see her as herself. He almost fucked up. But I’m glad he found his second wife. That how life goes I guess.