User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-31764731-20180326095200/@comment-95.90.224.215-20180328091435

But Ophis wants him to become the 3rd Dragon God. And he can become a Dragon God and stay in the Underworld. Unlike the Gods the Dragon Gods don`t need Human Faith and their Prayer. Dragons are Beings of Pure Power. Issei`s Body is that of a Dragon with Devil Traits, But his Flesh, Blood and DNA is that of a Dragon born of Great Red and Ophis, that is Fact. Also in Vol. 24 it is said that the Power of Infinity spreads out of his whole Body, meaning the Prozess to make him a Dragon God has already started. Maybe it was Great Reds and Ophis Wish from the very Start, who knows.