"I want to take the daughter of the Kuroyuri family as my bride." An encounter with a certain man changes the fate of a girl who has been oppressed by her family.

◆◆◆ Though Kazuha, the eldest daughter of the Kuroyuri family, was born into the Kuroyuri family, which has inherited the highest rank of sorcerers, the "Shinto-I", for generations, she is "incompetent" and cannot use sorcery. Compared to her younger sister Otoha, whose talent blossomed early, she spends her days being oppressed and lonely.

One day, Kazuha attends the ceremony to determine the "Shinto-I" as an escort for Otoha, and meets a beautiful man with jade eyes and a fox mask. His name is Shinonome Haku. Haku, who has the highest power as a sorcerer, is chosen to be the "Shinto-I" on behalf of the Kuroyuri family. He then proposes marriage to Kazuha, saying he wants to make her his wife---?

After Haku takes the position of "Shinto-I" from Kazuha, the Kuroyuri family gives Kazuha a forbidden order. It was to kill Haku on their wedding night.