User blog comment:Crimson and Darkness/DxD Updates 2~/@comment-31137559-20170523074321/@comment-73.160.58.215-20170525171522

About the Malebranche, based off the pace of the series, the only way they would appear in DxD would be as more-or-less throw-away villains released and manipulated by Hades or Indra as part of their plot. I doubt this will be the case since we the fans would are expecting far more of them by this point. More likely, they will appear as more significant villains in Slashdog, whenever Ishibumi gets back to writing it. (Of course he could further tie the two series together by having them make such a minor "cameo" in DxD...) Honestly, I know there are various circumstances influencing things, but I wish he would get back to it quickly, so he could introduce the other members of Tobio's team before he's forced to introduce them in DxD.