Don't even think about buying a similar novel. Do you have any recommendations?

I read a novel these days and dreamed that I was a character in it. I turned on the air conditioner because it was cold, and I was wrapped in a blanket. Then, in my dream, it was very, very hot. I could even fight with villains. I could use my hands and feet to cast skills, but my hands and feet were very heavy. Last night, I also slept like this. I didn't have anything to do with it. I woke up halfway through my dream with a headache and my legs were soft and hot. I turned on the air conditioner, but it didn't work. I still sweated. I want to know why.