Mystery: the Man in the Gap

Lu Yan (Gavin Stone), 22 years old, was a graduate student in geology. He fell into a crack in the ground during field exploration and accidentally fused the fragments of the "Infinite Gap". He woke up in Tingen City, Kingdom of Loen, and became a "Gap Peeper". The world is a continuous lie, and only the "gaps" hide the truth. In a mysterious world shrouded in heavy fog, Lu Yan wants to advance through the sequence of "gap paths" while uncovering the truth about his time travel - what is the crack in the ground that he fell into?