User blog comment:B214/High School DxD EX/@comment-24053170-20160113224250/@comment-24053170-20160115024356

Yeah I know that already. Which is why I said we won't know if it happened or not until Ex is over. I believe just about anything is possible in this story.

Plus not all of Isseis children have been revealed yet, so there is always a chance it could have happened.