One winter seventy years ago, a strange black snow fell from the sky. There was a black scripture open in the snow. The words in the book, including cruel, soft, good, evil, ugly, destruction, existence, desire, endurance, extreme, chaos, etc., Turned into countless black snowflakes and ran out. They burrow into human necks. The blood of the possessed humans turned black, and slowly, they acquired powerful abilities and body shapes corresponding to the possessed characters. Their personalities and thoughts changed according to the possessed characters. They are collectively called "forms" by humans. The shape of poison is opposite to the shape of recovery; the shape of endurance is opposite to the shape of desire. In order to survive, they must stick to their own form. The dead form must kill, and the existing form must save. Human beings are inevitably involved in this war of opposites.
