Once Upon A Sword Immortal

Shen, once a kendo practitioner of peak strength, stood at the top of the strong, and sacrificed his Excalibur in order not to hurt innocent people while crossing the Kenshin Demon.  
Having thought that he had failed to survive, he miraculously reincarnated himself again, finding himself in the body of a fallen young master, with the same name but a very different fate. Shen must face humiliation, betrayal, and an uncertain future to rebuild her power from the ground up.  
But when she begins to try cultivation again, an imminent threat has arrived, can she regain her lost power and rise again?