I’m a Supporting Character in a Novel

This is a laugh-out-loud novel. The protagonist is an ordinary person who accidentally enters an AI-generated novel and becomes a supporting character. Inside the story, he keeps a low profile while freeloading off the protagonist and roaming a cultivation world. In reality, the novel changes his life. What kind of place is this real world, exactly? And why has the world inside the novel crossed over into reality? Some people laugh through their tears, while others cry as they laugh. I just hope you can keep smiling. This slow-burn comedy is well worth a read.