The world was facing a rapid rise in temperatures. Crops were dying, ecosystems were changing, and the world was facing a serious food crisis with no solution in sight. Land mass too, was slowly but surely shrinking and the human race was forced to split into two major factions in a fierce fight for survival. Nagi and Nami belonged to one of these factions, but abandoned their homeland and fled the war. They traveled far from the ravages of war and explored the earth as archaeologists. The history of mankind, and even the cultures of their time, were about to disappear from the face of the earth. The couple abandoned the continent and set out to sea.

When they finally came ashore, the two discovered that the island held strange monoliths. The blocks lay in a place we now call Kyoto, not far from a shrine near the Arashiyama Togetsukyo Bridge. Of course, the Kyoto we know today is entirely different from the area they arrived at. However, the location of the river, the bridge that crossed it and the village that lay beyond is probably similar to what we can see in present day Kyoto. The stones were covered in a mandala of mysterious language and symbols, clearly not of the civilization of that time. The mysterious stones were linked together like a chain, and the villagers called them "Chain Stones".

The area, not yet ravaged by war, had nature in abundance and friendly locals. Nami and Nagi, fascinated by the Chain Stones, settled near the village and began deciphering the language of the stones.The two eventually discovered numerals among the vast number of symbols. And following that, deciphered symbols equivalent to what would be used in mathematics, physics and chemistry. They deduced that the stones contained advanced science. And thus, season after season passed.

The village was peaceful but the flames of war were steadily approaching. The couple had a baby boy, they named him Hiruko and raised him lovingly. The two relied on their connections as researchers to obtain books on science from all over the world, and educated Hiruko as one would a scientist. As the world descended into madness and fear, the two spared no time for sleep, spending their days raising Hiruko and their nights decoding the mysterious language.

In the midst of this hopeless situation, the two came to realise that the expansive symbols and pictures were no other than a blueprint of a world. With the science of their time, it was not even fathomable to build a world, but there was no denying it was a recipe for world-building. The language of the stones called it the DenDenGarden.

Even as Nami and Nagi rushed through decoding, the rising temperatures showed no signs of stopping. On the once abundantly green island crops withered away, plagues spread and death stole people away each and every day. The family of three, fueled by dreams of living together in a world without strife, persisted in their efforts to analyse the design of the DenDenGarden. The couple taught Hiruko to keep his chin up and keep going no matter the circumstances.