Star Rail: Chaos Agent from the Yunwu Era

Fresh off saving Teyvat with a perfect ending, Jiang Yuan gets recruited by a mysterious system to become a Pioneer and rescue yet another world. But there's a catch—he's dropped centuries *before* the main timeline, back when the legendary Five Young Masters of Yunmeng still walk the land. Armed with meta-knowledge of catastrophes to come and a system that won't take no for an answer, Jiang Yuan realizes he's about to turn history upside down. The future he knows? Consider it officially derailed.