Novel's Side Character "Great!"

Inexplicably reborn as a mere side character within the pages of a novel, I am thrust into a world where a prestigious magic academy teems with ambitious students, all yearning for strength in a realm fraught with perilous enchantments. The challenge lies in how to navigate this treacherous narrative. Follow my journey as I recover my lost memories at the tender age of twelve and, armed with knowledge from the very book that birthed me, embark on a quest to attain power and possibly steer the tale in a different direction. But as destiny would have it, a different, unforeseen plan awaits, testing my wits and resilience in ways I could never have foreseen.