I actually am also looking for something specific. The premise was similar to Malignant in terms of the premise. From what I remember it was a father or step father that was mentally struggling or just a very dark twisted man. The mother was still there, and I don’t remember how many daughters there were. a choice based, visual novel.
Anyways ill take in any general recommendations too, I played most the very known ones so try give me suggestions that are less likely that I would know.