It's Really Hard to Play a Time-Traveling Girl

{Putting through books+male protagonist not getting married+healing+chasing his wife in the crematorium} {The beautiful female protagonist who is cold on the outside and very soft-hearted on the inside + the young master in the early stage - the male protagonist who is sinister, yandere and paranoid in the later stage} Chu Wan'er is a college student. One day he choked to death while eating something at home. He traveled back in time to the novel he was reading and became the vicious female supporting character in the book. Needless to say, the female supporting character separated the male and female protagonists. If she couldn't get the male protagonist, she tried her best to keep him by her side. She drugged the male protagonist and was saved by the female protagonist. The first thing the male protagonist did when he succeeded to the throne was to kill Chu Wan'er, have her limbs cut off, put her body into a vat, and torture her to death bit by bit. When Chu Wan'er traveled here, he wanted to stay away from the male and female protagonists and find a way to survive. However, when he went to sleep on the first night he traveled through time, a small round meat ball appeared in his dream. She told me that he was a book elf and asked me to save the male protagonist and help him chase the female protagonist, because the elf accidentally let in the black energy. If he completes the task, a wish can be fulfilled. I will work hard to help the male protagonist for this wish, but the male protagonist looks at me more and more wrong.