Origin of Man
Without any recollection of our past, we have become restless, always searching for something without knowing what it is. We no longer remember the square planet, but keep building square boxes here on earth. But for some of us, the memories of the Crystal planet returns in small fragments, invoking a sense of deja-vu. The story about how humans are immigrants from another place, a planet square as a box. When a hostile creature threatens the planet, the residents had to evacuate, leaving their identity and memory behind.