The 7 of them are orphans with no memories of their childhood. They only woke up at a shrine, and was took in by a man who introduced himself as Keto. They were raised as monks in a place isolated from the world for a hundred years, which made them wonder on who they really are. On their thousandth year there, however, one of them had a dream of the past. They were challenged by their mothers to prove themselves worthy of all the sacrifices their mothers did for them. Since Keto was done taking care of them, and they're curious of the outside world, and because they felt the need to figure out their pasts, they accepted their mothers' challenge and ventured to the outside world— including Virtual Reality. As time passes by, secrets and pieces of their past are being uncovered, bringing happiness and horror. In a world where Fate seems to be the master of everything, will finding their mothers be their only quest? Or Will it be something else?