I agree but that’s just an unfortunate reality of many toxic relationships: sometimes there is no valid reason to stay with the abusive partner, however since they’ve shared so much time and energy together already, victims tend to develop a sense of codependency that deters them from leaving their partner.
In MC’s case, he knows that his partner is extremely fucked up and clearly toxic. The thing is, he views himself in a similar way. He’s pretty sure he’s going insane, he strangles his partner and occasionally instigates their freaky sex, and a part of him believes him when he says that MC secretly enjoys the nature of their relationship. Not even factoring the fact that they had a very close relationship when they were younger, it’s no surprise that it’s so hard for him to end the relationship ( ̄へ ̄)
And as for why he’s still working at that place, he said it himself, he’s been through similar experiences before. When all you know is something that’s bad, eventually you begin to believe there’s nothing else left. Think of it like growing up in an abusive family. You may understand that what you’re experiencing isn’t right, but there comes a point where you start to think “well, this is just my life and I have to accept it”. Sure you could technically run away or report your abusive family members but there’s no guarantee that your life will be better afterwards (in fact, there’s a higher chance that it may get significantly worse). In the same way, mc won’t quit his job because he seems convinced that he’ll just end up with another job where he is constantly harassed and abused. Though things may change if his partner is truly responsible for all the workplace abuse he faces.
Sorry for the yap session btw, I just like dissecting things like these ( ̄∇ ̄")
No worries with the yapping, i do be like that too
But yeh from all youve said, i truly understand how hard the decision would be to leave everything entirely, specially in a situation where the mc is manipulated to think that he is at fault for this situation (most of the time). Thats why i was so sad when the friend left cause like man the suffocation with all that is happening is bad. And ye sadly the narrative is realistic in some ways i cri.

What I can never understand tho is why leaving him is not in his choices. I mean sure everything went nuts but does the mc really love him enough to stay or is he to proud to quit his job because he doesn't want to give in to the injustice? Like it's not making sense for me rn help
P. S. I'm not downplaying his situation where he is being manipulated and isolated. I just don't know which one is it that's keeping him there now that the friend is gone