Ordinary high school student Hajime Nagumo leads a typical otaku existence—until a bizarre summoning catapults him and his entire class into a fantasy realm. Appointed as saviors destined to prevent humanity's annihilation, the students discover their true powers. Yet Hajime's reality proves starkly different: his Synergist class grants only a humble transmutation ability, paling against his peers' god-tier powers. Shunned and tormented by classmates who view him as deadweight, Hajime faces overwhelming despair in a world teeming with demons and monsters. Can an average teenager possessing merely blacksmith-level aptitude endure this perilous new existence and defy the odds stacked against him?