I Can Modify My Script

My name is Chino, a novelist. Three years ago, I met a girl named Yuukan. We had a passionate love affair... But then, she disappeared. She vanished from my sight, from everyone's memories. I tried to find traces of her existence, but got no information. One day, two strange novel chapters that I couldn't delete appeared in my draft box, and at the end of them, Yuukan was screaming 'Help me!'. ... I was pulled into a horror novel, starting as a passerby... I'm looking for her, I'm redeeming myself. I can modify the content of this novel world... 【ps: Not first-person】 【pps: New book asking for votes, welcome to vote...】