Suguru Geto began his journey as a Tokyo Jujutsu High student, ascending to become one of the era’s four special-grade sorcerers through unmatched skill. His early years intertwined with Satoru Gojo, forging a partnership so formidable they were dubbed "the strongest." Compassionate and duty-bound, he championed the belief that sorcerers must shield non-sorcerers—until the Star Plasma Vessel Incident shattered this conviction. Failing to protect Riko Amanai, the girl fated to merge with Tengen, and witnessing her killers’ jubilation seeded a quiet fury within him. Disillusionment festered as he grappled with the paradoxes of sorcery. Yuki Tsukumo’s revelation—that non-sorcerers fueled the cursed energy plaguing humanity—ignited existential doubts. The loss of Yu Haibara, his optimistic junior, and encounters with humans exploiting cursed beings deepened his resentment. A defining rupture came when he slaughtered 112 villagers after rescuing abused twins Mimiko and Nanako Hasaba, severing ties with jujutsu society to embrace curse-user infamy. Branding non-sorcerers as "monkeys," he envisioned a purified world ruled solely by sorcerers. To realize this evolution, he founded the Time Vessel Association, rallying disenfranchised sorcerers and curse users. His arsenal, Cursed Spirit Manipulation, let him devour and command over 4,000 spirits, wielding techniques like Maximum: Uzumaki—a spiraling fusion of cursed energy—while concealing lethal martial prowess beneath a strategist’s guise. The Night Parade of a Hundred Demons masked his true objective: eliminating Yuta Okkotsu, host to the Special Grade spirit Rika. Though initially triumphant, Yuta’s bond with Rika reversed the tide, leaving Geto mortally wounded. In defeat, he confessed unresolved anguish to Gojo, mourning a world where neither found fulfillment. His corpse, later usurped by the ancient sorcerer Kenjaku, became a pawn in grander schemes. His fractured bond with Gojo endured beyond death—a duality of rivalry and unspoken kinship. Once inseparable, their diverging philosophies mirrored tragedies born of shared trauma, each a reflection of paths untaken, yet bound by echoes of what once united them.