One day you read a novel and fall asleep, when you wake up for some reason you wake up in a luxurious mattress and bed with an ancient royal design.

You are surprised when you wake up. You see a mirror. You see the character of the novel you read earlier. It turns out you are a NPC in the novel you read. You think about in order not to die because one day Kaiser the demon king will rise and destroy the world.

"Damn what should I do..."