Comment by CloudLord on Darude

that girl has resistance to pain. But mc said that he will skin her alive. After cheongryeomg said something (I don't remember exactly), he said that he will not skin her as it is way too inefficient.
But when she woke up, he said it to her. She got panicked and frightened and thought that mc will not do it really. So, to make her believe mc bit the back part of her knee and chewed in front of her.
She passed out again.
Mc's conclusion from this incident - resistance to pain does not mean resistance to fear.