Mirai Sasaki, the Pro Hero Sir Nighteye, served as All Might’s strategist and sidekick before founding his own agency. His Quirk, Foresight, granted him visions of a person’s future through touch and eye contact, projecting detailed third-person scenarios with no temporal restrictions. Each use mandated a 24-hour cooldown, and while his predictions were precise, they remained vulnerable to disruption—such as Eri’s Rewind Quirk or unified efforts to defy fate. His partnership with All Might fractured when he foresaw the hero’s demise and insisted on retirement, a demand All Might rejected. Establishing the Nighteye Hero Agency, he recruited sidekicks Bubble Girl and Centipeder to dismantle the Shie Hassaikai and liberate Eri, a child exploited for her Rewind ability. Pragmatism drove him to mentor Mirio Togata as All Might’s ideal successor, though he eventually recognized Izuku Midoriya’s resolve when the latter defied a fatal prophecy during the raid. Nighteye’s combat style fused Hyper-Density Seals—5kg projectiles hurled with pinpoint accuracy—with his anticipatory prowess. Beneath his austere exterior lay an affinity for humor, a trait inherited from Dragon Ball’s Kaioh, compelling allies to elicit his laughter. He curated an extensive All Might memorabilia collection, balancing reverence with a steadfast commitment to pragmatic ideals. Mortally wounded battling Overhaul, he confronted his fatalistic interpretation of Foresight, conceding that shared determination could rewrite destinies. In his final moments, he praised Mirio’s evolution beyond successor status and urged optimism, framing joy as a catalyst for hope. His agency persisted under Centipeder’s stewardship, with Mirio maintaining close ties. Clad in subdued office attire that defied flashy hero conventions, Nighteye’s legacy endured through strategic innovations, his agency’s operations, and the Vigilante spin-off’s exploration of his early career. His teachings continued shaping successors, underscoring the interplay of foresight, adaptability, and unwavering principle.