A time not too far from now. To find a solution for the food problem caused by a growing population, every country has been investing huge budgets into scientific research to increase every single mass with as limited time and energy as possible. As a result, new elements the 119th and beyond were discovered and created one after another, and finally, a genius scientist in Tokyo named Hikojuro Araki succeeded in creating the 256th element, Araraginium, which is a dreamy element that creates every being out of nothingness.
However, at the very moment when the first experiment in the world to create Araraginium just began, by an unexpected accident, it diffused all over Tokyo and disappeared.
A few days later, appalling incidents started happening all of a sudden, all-over Tokyo; people who were thought to be dead started emerging back to life as if they had never been dead, not even once. They all had a memory before their death, and actually, were those who passed away during the time period between the accident and 72 hours before that.
Due to their relevance with the accident, those people were called Araragi Human.
This story takes place several years after this in Tokyo…
