User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170330235047

I really hope that Ravel advises Issei to make Tiamat his queen. He can challenge her and if she loses, she becomes his servant. Because Ravel feels like there is no one worthier of being the Red Dragon Emperor's queen than the strongest Dragon King. And Tiamat will not become part of his peerage any other way. Or Issei's queen ends up being one of the remaining Longinus possessors.