In any case, the latest update had a part where Kaylah told Charlotte that the MC turned her down. So I think Charlotte route would only be available if you're loyal to her. Harem or any "Dual" endings seem unlikely, at least not any of the endings involving Charlotte.
I accepted Kayla's offer. I dont recall the exact words but I did not get the impression that this closed off the Charlotte route.
It was something along the lines of
"Oh no? Maybe this means MC doesn't like me afterall? Or maybe he only accepted her offer because he doesn't think I would ever like him back. Maybe I need to show me that i'm willing?"
So basically Charlotte sort of blames herself for MC accepting Kayla's offer and seems to consider the possibility that she needs to step up to the plate and fight for him if she wants him.
The real test will be when Charlotte realizes that Lucy is in this contest too. I also accepted Lucy's offer to become a couple and hate that there doesn't seem to be any route forward that won't horribly hurt one of them. I'm 'Team Lucy" if it comes down to it. I do think she's hotter that Charlotte visually(especially if she puts her hair back how it was in her modeling days), and it's hard not to feel for her having been used so many times in the past by guys who just wanted a shot at Charlotte EXACTLY the way Zac tried to use Emma. I think losing MC to Charlotte too would destroy her completely, and Lucy doesn't deserve to be destroyed like that. She's awesome.
I feel bad for Charlotte too if she loses out on the first man to make her feel safe after all the abuse she's endured but Lucy got there first.
And if....HUUUUUGE "if"....there is indeed some path to sharing both sisters, I think it would have to come from Lucy. As long as Lucy doesn't feel like she's "losing" to Charlotte again, Lucy might actually be willing to share to finally see her sister happy. As as long as Charlotte understands that going in, she might be open to it too.
Note I don't think either would be cool with a threesome or anything...just that they MIGHT be open to sharing but only if Lucy is "the Alpha female" in the arrangement.
It's a long shot, but the only shot I see if it is to be an option. At least where it's all out in the open and nobody is "cheating". If you don't accept Lucy's initial offer to be a couple I could maybe see her being willing to cheat behind Charlotte's back but that's a stretch too and given the way he's been written so far, I ain't sure the MC would be willing to do that even if Lucy was.
I'm certain both Lucy and Charlotte are firmly off the table if MC touches either Emma or Suzi.
Oh, there's going to be minimal blowback on the MC. He did it in self defense and Carter was corrupt but there's a likely chance it may be exploited for future drama (and next update will deal with what you gotta do with the body, likely they'll just dump it there and leave). Imagine asking Charlotte to give you and Carter's corpse a ride to the closest landfill lmao.
I assume MC will send Charlotte to take Emma home, then call his bartender warbuddy to come help him dispose of the body.
Sidenote: You know you have a true blue ride-or-die friend if they'll drop everything and come help you hide a corpse
MC knows enough by now to know...or at least suspect that Carter is involved with the Sex Slavery Ring, and might reasonably anticipate that if he tries to tell the truth he'll just get setup by other corrupt cops.
Also judging from bits of slang sprinkled throughout this game I believe it's all set in Europe. Britain, most likely. And Europeans don't have nearly the level of respect for self-defense that Americans have. Red/Purple State Americans, at least. So while MC was morally right to kill Carter, it's possible he might still have violated some sort of duty-to-retreat law. A psychotically unjust law, but a law nonetheless. Further incentive to hide the body.
Maybe the agent lady will even help.