I played this game a couple of years ago but stopped when the reworks began and chose to hold off until they were finished before playing again. I have now played it and just have to say...WHAT THE FUCK IS UP WITH THAT ENDING?!
First of all, majorly stupid of the MC to not use the fact that Jake is riled up to control him and make him either forget what he saw or at least be OK with it. Sure, the dev didn't have him do that for drama purposes to set up that shock ending, but really, feels like they kinda just neglected the game's own logic for that because Jake was so angry he should have fallen under the MC's power easily, especially since Emma said it could be easier for it to happen with the new pills.
Then, you go ahead and give Jake enough pills that he may have this power forever and leave the MC in a situation where it seems almost impossible for him to get out of because there's surely no way he'll be able to get control of Charlie or even make him snap ouot of it and make him stop. And on top of all that, a vengeful Jake gets to leave with all the pills and likely wants to fuck all the girls close to the MC to get back at him, setting up what would be a very uncomfortable scenario for many people. I don't believe the dev will include any of the dreaded NTR, but ending it there with that possibility certainly doesn't leave you with a good feeling, so "mission accomplished", I guess.
Maybe it could be as
TheGreySun said and Jake trying to use the powers won't have any effect because them being so close with the MC and likely having been affected by his power has created a strong attachment to him that will make them immune to anything Jake tries. That, or because Jake swallowed so many pills it will mess with his stomach and cause him to vomit and pass out before he can do anything and the effect of the pills will be gone. Or perhaps Violet shows up just as Jake is leaving and manages to stop him.
Violet showing up may also be the only way the MC gets out of this, as far as I can see. Because if she sees Charlie pummelling the MC she'll surely try to make him stop but he won't, because she wants the MC alive, so maybe she'll be forced to shoot him to stop him.
In any case, as much as I love this game for its hot ladies, Ep 9 certainly doesn't leave you feeling good, and to be honest, I kinda don't like it when games like this, which seem generally very carefree and easy for like 99% of the time, try to inject some dark drama for what just seems like the sake of it. Like they feel as though the game somehow needs an injection of dangerous and tense drama to make it better even though it's been perfectly fine just being a kind of easygoing romance game. Almost feels like it's a bit of a rug pull when you do it so far into a game without really much indication it was going this way and somewhat ruins the overall feel and experience of the game up to that point, imo.