Get one's comeuppance.

(This book is the same as the Sufferable truth but, the plot is far more different than the other.)

Wei Wuxian truly believes that his past will never be forgotten. It has been an impediment to his life as the deaths of the innocents that he had caused haunts him. Especially, his Shijie, Madam Yu and Uncle Jiang, the Wens, and a lot more. He kept those burdens to himself until he and Lan Wangji married. His life was getting blissful after their marriage.

Not until they woke up and met...those people he was desperate to bring them back to life.

However, they were stuck in a mysterious room with no lights, furnitures, and such. Which makes them confused. But, their question was finally answered after.