You're just an unknown novel writer.

One night you were planning to kill one of your characters but suddenly a bright light came into your room

You flinched as the dazzling light hurts your eyes. When you open your eyes, a man stood Infront of you. He's one of your novel characters you planned to kill

"Because of your choice some live while some die..but t'was an amazing adventure"

He bowed

"If you choose to kill me in your story, will they miss me if they read it?"

He sounds sad