The Xth Loop: Sword & Stilled Time

Homura Akemi has known failure too many times. But then the impossible occurs, and she finds herself contracted with a former foe - one of the dangerous and enigmatic beings known as a Counter Guardian. Will this man's allyship and limitless stock of swords prove to be just the salve her hopeless quest needs, or will a miracle still not be enough to save what she holds dear?