User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-95.210.189.106-20180423154331/@comment-83.46.70.55-20180423163247

Maybe that Angra Manyuu is related with the ExE world.

And this character(not Hades) is the main villain of Shin dxd... I think that Ishi mentioned something about one surprise in this volume(maybe I am wrong)..