User blog comment:IamJakuhoRaikoben/Chapter 458: Morning Star, Review./@comment-4933386-20151026034357/@comment-5894890-20151026171243

I think the light was just coming from her armour itself; something she's never shown before, cause photon slicer is an attack coming from two swords o_o. Anyways, I agree, the Bisca and Erza relationship shown here is great :D.