User blog comment:B214/Anime Discussion/@comment-24421137-20151115193202/@comment-26474856-20151115200126

Well since Ittou Shura is  allowing him to gain tremendous power   for 01 minute and she said "Ittou Shura of the night" or "your night Ityou Shura" I'm guessing that she ment that Ikki will use it for something during the night and it has to last long enough so....