Another good update. It did get me a little worried that all the girls will be redeemed by the end, perhaps even Rachel. That's not how life works. Granted, this is a story about a harem, but still, there should be some unredeemed motherfuckers.
I don't want Catherine to not be a bitch, and I suspect that's where it's going: she has some family problems, and the protagonist helps her out, and changes her from a bitch to a decent person. That's nice and all, but what's a story without villains? Not all the villains should be male, old, or ugly. Deep down, Catherine should stay a two-faced bitch, because that's who she is. Bad parenting and/or bad genetics don't get cured in a week. Or a year. Or, often, in an entire lifetime. I think that, for the vast majority of bullies, they have a fundamental flaw in the core of their person. Most people can be a dick sometimes, but I think there's a fundamental difference those people (of whom I am one) and people who are consistently cruel or manipulative or something like that. I don't mind Vicky and Sarah becoming nicer. Vicky, at least as far as we saw, was never actually THAT bad. Not like Catherine and Mika. Sarah was reacting to insecurities that the protagonist triggered (like an idiot). It makes sense that their characters can grow a bit, and grow to like the protagonist. Not Catherine. Anyone who intentionally makes a fake sexual assault claim should never be redeemed.
End preemptive possibly unnecessary rant.