Board Thread:General Discussion/@comment-34987027-20180605194751/@comment-36105773-20180708042209

It's all theoretical, of course. The fact that he was willing to use it once means he probably would use it again if a Maiden became too old to fight and were at risk at having the powers stolen. We probably won't find out because it isn't likely that many Maidens would live to 70 or that the anime would contninue to the point where any Maiden would have aged to that point.