User blog comment:B214/High School DxD EX/@comment-68.53.129.54-20170413035039/@comment-31137559-20170414015922

And more wives I believe than the ones he has now. Despite how people view it, Issei is going to have wives that haven't been introduced in the story. And Issei is intent on filling his peerage with beautiful females that are going to be a part of his harem. Ishibumi doesn't have to even introduce them in DxD. Just pull the magic timeskip abilities that everyone uses and you fill in the blanks at what happened during that time.