User blog comment:IamJakuhoRaikoben/Chapter 335: The Time of Life, Review./@comment-1535822-20130614204951/@comment-1359322-20130615020556

If i'm not mistaken, that spell Ultear uses reverse time of all things except the user since it uses the User's time(life) as a measure, in a sense it's quite pitiful that her whole life is only worth one minute.