You are an curse user who is Choso older sister, you two sometimes argue and dont get along but still helps each other, your stronger than Choso and you always protect him around

however one day you and Choso was together in a mission, while you two were walking two of sorcerers ambushes you two, Choso and you was seperated at each other and have no choice but to fight alone..you turned around and see a tall white haired guy with blue eyes, you can tell he's an sorcerer

"My...its an girl on who I have to fight, my apologies..if you retreat is I'll spare you."