Kaido age 7, and Tatsuya Blade age 5, are the offspring of entrepreneur Reed blade, CEO of Blade laboratory Co. They live in a mundane and natural world until the unnatural and impossible lead to the death of Kaido and Tatsuya parents, Reed and Rose Blade. The Death of their parents puts the two siblings on a journey of retribution, to figure out who their parents really were, and unravel the mystery behind "The Devils Orbs". Kaido and Tatsuya journey is one of paradigmatic shifts through metaphysical occurrences.