F-Rank Mechanic, SSS-Rank Contracts

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In a fantasy world where power levels dictate destiny, a lowly mechanic stuck at the lowest F-rank suddenly gains access to legendary SSS-rank contracts. This unexpected upgrade thrusts them into a series of high-stakes conflicts and intense action. As they navigate dangerous alliances and powerful adversaries, they must master these elite agreements to survive. Across 60 thrilling episodes, this journey of survival and power unfolds.