User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-33341107-20190118091645/@comment-71.221.38.212-20190123205433

Diehauser's power not underestimated here, but no one remains untouchable forever. Many cases IRL or in light novels and manga have stated the warriors of the present will eventually be surpassed by the next generation. After all, the Walls of Jehrico were perceived as unbestable, the walls fell. Warships or cities of the past were seen as unvanquishable, ships inevitably fail, ancient strongholds fell from without or from within. So I believe Diehauser's days of unbeatability are numbered.