I'm the school's badboy but I'm a girl

My bond with my brother has always been unbreakable; we share such a unique connection that I occasionally dress as him to accompany him to all-male spaces, pretending to be his twin. Initially, this brought some challenges, like when I unknowingly went on a date with his then-girlfriend because he was unwell. He was understandably upset, but eventually, he found the humor in it too. Our adventures were light-hearted and playful until tragedy struck - my brother fell ill, and my parents sent me away to live with my grandmother while they sought the best medical care for him. Unfortunately, I wasn't privy to the specifics of his condition, only that it seemed severe. Longing for my brother's presence, I arrived in this new town where nobody, except for my grandmother (who didn't know my true identity), knew I was actually a girl. At home, I played the perfect granddaughter, but at school, I embraced a rebellious persona, becoming the object of desire for many girls as "the drop dead gorgeous badboy." Life was thrilling until the day I met Xavier Grey, a new transfer student, and Teresa, my girlfriend's cousin. That encounter marked a turning point, forever altering the course of my double life.