(Supernatural + horror game + transmigrate into a book + naive at first, calculating later + protagonist killer)
Lu Jing transmigrates into the horror novel he is reading and, as an ordinary person, struggles to clear one instance after another.
He thinks he can cling to the protagonist for protection whenever they meet in an instance, but the protagonist's personality is nothing like the one described in the book.
Lu Jing gets tricked by the protagonist several times without even realizing it. Then someone important to him is killed by the protagonist, and before dying, they tell Lu Jing what they heard. From that moment on, Lu Jing sets out on a path of cold calculation.
One day, Lu Jing finally gets the chance to kill the protagonist.
Chu Bai: "Lu Jing, don't you remember? We've cleared so many instances together. We're comrades who've shared life and death!"
Lu Jing: "Die!!!"
Chu Bai's hands leave his body.
Chu Bai: "After everything I've done for you, how can you treat me like this?"
Lu Jing: "Die!!!"
His feet are gone too.
Chu Bai: "Have you forgotten everything?"
Lu Jing says nothing, simply continuing to send Chu Bai on his way to paradise.