Negi's father and one of the most legendary wizards to ever live. The "Thousand Master" title's origins are murky—some say it refers to knowing a thousand spells, though Nagi himself has admitted he's basically a school dropout who only knows a handful and reads from notes for anything else. Evangeline claimed this in a dream, but she hates the guy, so take that with a grain of salt. Asuna's flashbacks seem to back it up though. There's also an old rumor he made probationary contracts with a thousand girls, but that's almost certainly just Chamo-kun's lie designed to motivate Negi and rake in broker fees. Still, Nagi's contract with Albireo Imma is numbered 1001, which is weirdly suspicious.
He's absurdly powerful—both magically and physically—and didn't need any Ministra Magi backing him up. His fighting style mixed rapid-fire magic casting with hand-to-hand combat, making him nearly untouchable.
Nagi never actually finished wizard school; he dropped out. At ten, he won what was essentially the last major Mahora Martial Arts Tournament, then got swept up in a magic war around age fifteen. After it ended, his heroic reputation exploded and he earned that "Thousand Master" title. He vanished in 1993—the same year Negi was born—and most people assumed he died. Nagi himself recorded a message for Negi expecting he wouldn't survive that long. But he managed to stick around four more years; he showed up just in time to save young Negi from demons attacking their village, though he was clearly in bad shape. He only stayed long enough to hand over his staff before disappearing again.
From flashbacks, Nagi comes across as likable and playful, with a cunning streak that borders on supernatural. Albireo's illusion of him had the same vibe, just with more ego. The fact that Albireo's pactio with Nagi is still active has led fans to speculate he's actually still alive out there somewhere.
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