Minamoto Teru, eldest heir of the exorcist Minamoto clan and Student Council President at Kamome Academy’s High School Division, commands attention with his tall, lean frame, golden-blond hair, and sharp blue eyes. His modified uniform bears a red-and-white armband, a katana sheathed at his hip or back, and a red-yellow bracelet on his right wrist—an adaptable restraint tool used to subdue his vice president Akane or rein in his younger brother Kou during disputes. Trained in exorcism since childhood, Teru wields black spirit lightning that sears souls and traps foes in crackling cages, surpassing the white lightning of his siblings Kou and Tiara. His agility enables rooftop leaps and swift strikes, overpowering even apparitions like Hanako with precise kicks. Outwardly composed and charismatic, Teru’s reputation as a kind leader conceals ruthless pragmatism toward supernaturals, deemed threats to eradicate. He spares only the Mokke for his sister Tiara’s sake, often incapacitating targets brutally before exorcism. Yet he fiercely shields Kou and Tiara from their clan’s harsh traditions, yielding to their whims despite his rigid exterior. His upbringing under strict clan tutelage began at eight, marked by isolation and physical rigor. His mother’s death when he was twelve left her views on the supernatural ambiguous, deepening Teru’s conflict between familial duty and personal dissent. He enforces clan practices to protect Kou and Tiara from similar trauma, resenting expectations while upholding them. In the altered "New Present" timeline, Teru alone remembers the original world, feigning cooperation with an arranged engagement to Akane Aoi while covertly sabotaging the Clock Keepers’ manipulations. This version exposes his strategic cunning and hidden vulnerability as he battles to restore reality, torn between the fabricated peace and his true memories. Notable traits include a sweet potato preference, academic dominance with bonus exam scores, chronic sleep deprivation from nightly exorcisms, and subtle anxiety over Kou’s independence. When stressed, he idly toys with nearby supernaturals. Evolving narratives reveal Teru’s struggle between duty and devotion. His interactions with Akane and responses to his siblings’ bonds with supernaturals hint at potential moral complexity, balancing clan doctrine with guarded compassion.