User blog comment:Crimson and Darkness/Shin DxD 4 discussion/@comment-73.10.61.229-20200219214739/@comment-37560916-20200221143504

Well, since Ishibumi has stated that he wanted to put his "true"  idea of DxD, and he has introduced the ExE world long time ago, and he was a horror writer; it would say that this is almost all planned.