Introduction: Survival is a daily battle in the cutthroat ecosystem of Sakuragaoka High School. Muren is a quiet and aloof student who prefers to live as a shadow, shielded from the ruthless hierarchy of school bullies. But beyond his passive appearance lies a brilliant intelligence and deep wisdom, fueled by obsessive observation and a thirst for power that transcends everyday life.When a chance encounter with an ancient leather-bound book unlocks the secrets of covenant magic, Muren finds himself drawn into a world of invisible and rhetorical forces.If you crave unadulterated action sequences interwoven with a low-tier magic system that maintains balanced tension, this novel is tailor-made for your adrenaline....