User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-36663391-20181204140538/@comment-2208155-20181204163400

Remember that Ishi mentioned that he wants to make one story with Strada, Lint(church characters)  too.. This will be in one DX volume..

EX is one exception and is about Issei future.. Like Zero is about the devils faction past en the 4 satans.