Metropolis: My Dream Has Come True?

One day, Yi Yu had a dream, and when he woke up, he found that the dream seemed to have come true... So, he wrote the dream into a novel. That day I traveled to a place called the Other World... I met a very weird person... I thought it was just an ordinary dream, but I didn't expect that weird things happened one after another in reality. He also found a place exactly like the one in his dream! "Are dreams really dreams? Or... Dreams are actually humans' ability to travel through dimensions and space..." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.