User blog comment:B214/Question & Answers 5/@comment-108.224.166.119-20160113013854/@comment-98.22.145.143-20160113023902

Most of those people are idiots. Ishibumi himself has said 21 is for Vali. He is also doing 1 for each of the main girls (Rias,Akeno,Asia,Koneko) aswell as 1 for Kuroka, Kunou, and LeFay. DxD is far from over.