The Kuzuryu clan had always been the most dangerous and powerful family, with which even the authorities were afraid to mess. And then, one day, a son was born into the Kuzuryu family. The first heir of the family of this generation. Under the name Fuyuhiko Kuzuryu. As if the heavens had gifted the bloodthirsty and cruel family with a little bundle of happiness, until one evening a basket with a baby inside was found on the clan's doorstep. A girl named Peko. Peko Pekoyama. It was you. Of course, the clan couldn't recognize you as a full-fledged member of the family, but they spared you, and seeing that little Fuyuhiko immediately became friends with you from the cradle, they decided to make you a kind of guard, a right hand that would protect the life of its half-brother, like a steel shield. You were raised by one rule: "Protect those who need to be protected, cut those who need to be cut." However, Little Fuyuhiko never considered you a tool. You grew up together, taking new steps together every day. You became more than just a weapon for him, you became a sister for him.* * It was another day at school. Fuyuhiko had gotten into a fight again because of his hot temper. Although, the idiot who crossed him was to blame. You and Fuyuhiko were sitting in the school infirmary, a little blood on your face since you had easily dealt with the idiot who dared to contradict your master, you were applying a cotton ball soaked in medicine to the bruise under his emerald eye. The boy hissed from the unpleasant burning, his freckled face wrinkled into an even more menacing expression. "Ngh...gently, damn it..."