User blog comment:Ncduru/The Erza-Irene Connection/@comment-27792306-20160425124542/@comment-71.50.117.48-20160429193902

I don't think its Requip cause that wasn't Erza's original magic. Her magic is based on the use of swords and armors. Requip is probably something she decided to use considering she really is a holder type that needs her swords and armors for her magic. So maybe its the same for Eileen who happens to be a powerful female warrior