User blog comment:B214/High School DxD DX.4 discussion/@comment-24421137-20170720035349/@comment-31137559-20170722145926

They do love showing off the armor-type Balance Breakers though and that's why I feel Asia was on Volume 20's cover. And you're forgetting about Ravel. Talking about how Issei's confessing to the girls in order of their children's birth. Ravel's child is the same age as Rias' child. And her child is older than Koneko's and Kuroka's. Yet we're not getting a Koneko and Kuroka volume before a Ravel volume.