User blog comment:B214/Shin DxD 1 discussion/@comment-26709288-20180814233035

I have a question: Does Issei have a evil piece among his evil piece set, I've been reading bits and pieces of the recent volumes off of pages so I may have missed this information.

If not, are there any interesting theories regarding why he doesn't. Considering his power heavily surpassed Rias at the beginning (not current Rias but pre-volume 1 Rias) considering even she had a mutation piece.