When I woke up, my brother and I were wearing books.
He became the boss's evil doctor friend, and I was the vicious female supporting character who broke up the male and female protagonists.
Faced with the outrageous words "if she can't be cured, she will be buried with you". My brother pushed up his glasses and said, "I suggest you check for a brain CT scan."
Facing the tearful heroine, I handed over a tissue: "No one will want the pork head if it is filled with water."
The system forced me to follow the plot, so I started a [Mary Sue Survival Mutual Aid] family group with my brother.
The male protagonist angrily shouted: "Who the hell are you?!"
We looked at each other, smiled, and replied in unison: "Guess"
Concept: What kind of concept do you need for something like this?