Toki, second eldest of the Hokuto brothers, emerged from the Land of Asura alongside siblings Raoh and Sayaka. Orphaned early, he and Raoh were adopted by Hokuto Shinken master Ryuken. Initially excluded from training, Toki’s innate brilliance surfaced as he replicated techniques by observing Raoh’s lessons, compelling Ryuken to accept him as a formal disciple. A defining childhood moment—avenging his slain pet dog—unleashed his latent combat skill and forged a pact with Raoh to challenge his brother’s future tyranny if necessary.

Nuclear exposure while protecting Kenshiro during a cataclysm left Toki terminally ill, his hair bleached white and body frail. Relinquishing succession rights to Hokuto Shinken, he wandered the wasteland as a healer, crafting the Hokuto Ujō Ken—a martial art merging destruction and restoration. This technique mended the afflicted while granting adversaries euphoric, painless deaths. His pilgrimage led him to a plague-ridden village, where his cures birthed the revered "Village of Miracles."

Captured by Raoh’s army and confined in Cassandra, Toki faced Amiba’s impersonation plots to tarnish his legacy. Rescued by Kenshiro, he confronted Raoh in a seismic duel, briefly overcoming physical decay by activating the Sekkatsu-kō pressure point to emulate Raoh’s Gō no Ken style. Though dwindling stamina denied victory, Raoh spared him in reluctant mercy. Toki persisted as a healer until his final hours, where a mortally wounded Ryuga’s arrival spurred him to implore Kenshiro to forge resolve from sorrow. Accepting death’s inevitability, he departed peacefully beneath the Death Omen Star.

Toki’s creed of pacifism and empathy starkly opposed his brothers’ violent trajectories. Despite illness, his martial mastery persisted until terminal decline, sustained by a body enduring extremes, including prolonged starvation. His legacy crystallized Hokuto Shinken’s duality—annihilation and redemption—as he embodied its curative essence beyond all others. Bonds with Raoh and Kenshiro epitomized fraternal devotion, sacrifice, and the peril of power untamed by compassion.