Talented siblings Tatsuya and Miyuki Shiba each radiate brilliance as they embark on their second year at First High School, the leading academy for sorcerers. Since the duo is inseparable, it seems impossible that their affectionate connection had not existed only four years prior. At that time, middle‑schooler Miyuki felt uneasy around her elder brother. She and the family regarded Tatsuya as merely a humble servant tasked with protecting Miyuki; a simple instrument devoid of feelings or personal agency. Yet their bond was destined to shift irrevocably when an ordinary family excursion to Okinawa escalated into a perilous crisis that threatened their lives and altered the course of relationship forever.
