I'm Hannibal in a Horror World

My name is Lin Bei, and I have traveled through time. I thought this was an ordinary world and I was just getting ready to go out. Can anyone tell me what the balloon with a human head at the door of my house is? ! Good news: There is a system, and skills and traits can be obtained by conquering or eating creatures. Bad news: What do you mean there are no humans in the world except me? Lin Bei, I'm very panicked now. What should I do if the human head balloon blocks the door? Worse information: What do you mean there is someone in the mirror at home? Ghost Tales of the City, Ghost Stories of the Rules, Junji Ito, Tomie, Ghost Hunters, A Nightmare on Elm Street... Lin Bei, I seem to be a bit ratty. What happened to this world?