Fifteen-year-old Kiseki Ko is about to embark on a school year that will change everything he thought he knew about himself. As he nervously navigates the corridors of his new school in the simmering heat of August 1985, he finds solace in a motley crew of misfits: the sweet math whiz, Lotus; drama queen Ai; smooth-talking Jodan; resolute Yukanna; and the enigmatic Chishiki. But as friendship blossoms, so does the realization that not everything is as it seems. Unknown to Kiseki, he and his friends are under the cold gaze of Rei, a cunning demon from the thirteenth century, and his sinister band of Hallow Phantoms. Each Phantom harbors dark secrets, their motives intricately tied to ancient artifacts and lost souls. As they weave a web of infiltration, manipulation, and deception, the unsettling truth begins to unravel. What connects Kiseki to the powerful demon Lolita? And why does Rei feel threatened by the mysterious guardian priestess Katsumi, who watches over him with a past steeped in mystery?