...which part of OG Ran is a villainess??? I just see her as a child who is kinda awkward at expressing her caring side towards her step-brother.
Also, rather than simple mistrust towards women, I wonder if the ML was actually traumatised in the novel. Even if it was accidental, in the novel he DID ended up becoming the reason of a girl's death. Only the most unfeeling people would not be affected by that.