Dream World? or Dream World

In the real world, there are many two-dimensional and various time travels in novels. I always think about how great it would be if one day I could travel through time and fulfill a dream I had as a middle school boy. Unexpectedly, this day actually happened. Unexpectedly, was it still a dream? Is it a dream or an interdimensional one, reality or an illusory simulacrum? All of this happened so suddenly The life that should have been simple changed from then on and became no longer simple, and the story also kicked off... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.