User blog comment:B214/Volume 21 info & spoilers/@comment-95.90.227.186-20160426165328

I think at the end of the Series issei will have many Children and will have a certain Titel. "DxD" Dragon of Dragons and the Crimson Dragon God Emperor, and Vali would be the True Lucifer but I dont think vali will became A true Dragon God that will be Issei. Would be only Fair. Or Issei (As we could see him as Ophis and GR Son) The True Dragon Prince, but I think at the End Issei wil be One of the 2 to 5 Strongest Beings in Exitense and Vali UNDER Him,maybe one spot or 2, but I think it would be only fair if issei as MC would be stronger than his Rival. Issei= True Crimson Dragon God Emperor - Prince of dragons, Vali= True Lucifer - Prince of Devils. And I hope they will save the other Beings that a Sealed and ISSEI will be the one that will Destroy Trihexa for Good. But yeah I think i like this Series more now and hope that Issei will became his Rightful Title and that he could use all HIS Powers without a Drawback and as long as he wants. Just my Opinion.