An unexpected package was delivered to the boy Chatan, a carton with no signature and no special features.Driven by curiosity, Chatan carefully dismantled it, but the thing in the box was dull - just a seemingly ordinary toy building block.Just as he held the building blocks in his palm, something strange happened - a glimmer of light flashed, and ripples seemed to appear in the air. A mechanically transformed robot appeared from the void, just like the gear of fate quietly turned...