A Certain Scientific Klein Bottle

Chijiang Nayue saved his world and earned the title of the strongest—only to find retirement isn't in the cards. Just when he's settled into a peaceful life of casual hangouts and friendly sparring, his creator drags him back into service. Reborn with his memories intact, Nayue must navigate a new reality where his past victories mean nothing and fresh mysteries await. Can the former champion adapt to being a pawn in a larger game, or will he rewrite the rules entirely?