HELP ME FIND THIS MANHWA

It's a manhwa about a girl got kidnapped by a cult ( they say they are part of devil blah blah and they are trying to resurrect the demon king and they need sacrifices which is one of them is the FL) there are more than 3 hostages including the FL the kidnappers asked the hostages why they should let them live then when it's the FL's turn there's a backstory where she regrets helping the man in glasses then after the flashback there's an angel ( It's a MAN )who saved her and knows her because she is not a human in her past life and told her why she chose to be a human. If I remember correctly there's an angel in the title.