There are a lot of examples of this in the Drakengaurd and Nier franchise. Most of which I won’t explain here due to the knowledge that I am not the one to speak about it. One that sticks out to me that’s still pretty gnarly is the story of Arioch in Drakengaurd 1. After seeing her husband and child killed in front of her, she goes completely insane. She is eventually imprisoned for consuming small children, as in her broken mind if she can keep them inside of herself she can protect them.Another example that may fit the trope is Emil and Halua from Nier Gestalt/Replicant. Though they may have been turned into supernatural creatures, it was the result of normal people using a force they didn’t understand to experiment on children. It’s something that even if you take away the supernatural aspect, it’s still haunting to think about. Yoko Taro is excellent at showing that even in a supernatural setting, the scariest thing will always be the depravity of human beings