Shirone, a genius girl with cold temperament and outstanding abilities, is the youngest daughter of the Kuchiki family. When she was born, she was accompanied by incredibly powerful spiritual pressure, and her long, crystal-clear snow-like hair wrapped around her like a cocoon of silver silk. The entire Kuchiki family is particularly proud, because Shirone Kuchiki is destined to become the greatest Shinigami in the family, and even one of the few Shinigami with powerful spiritual power in the Seireitei. But she is too fragile and has no resistance to the outside world. A slightly stronger spiritual pressure can make her unable to move. Therefore, the entire Kuchiki family has concealed the existence of Kuchiki Shirone, because if her existence is discovered by the Central Room 46, she will definitely be admitted to the Zero Division, where no one can protect her, and Kuchiki Shirone, who is as weak as a porcelain doll, may die at any time. Therefore, the Kuchiki family concealed this secret, and Kuchiki Byron grew up under the care of his father and eldest brother Kuchiki Byakuya. Until that day comes...