If You Don’t Know the Novel, You Will Die

One day, I was in a world that I did not know.
[The entrance to the quest has been successfully completed!] [Quest (Main) – «Fix the world!»] [Content: This world was created by mixing four novels – Child Care, Contract Marriage, XXX, XXX. Genres are unknown. You must return the four distorted novels to the original. ].
But… I have no memory of their content. If I make a mistake… then I’m going to die?! Besides, the distorted web novel characters are interested in me!