User blog comment:Crimson and Darkness/Shin DxD 3 discussion/@comment-29890029-20190812192108/@comment-29890029-20190812193545

DxD = GR + Ophis (using both power dream & infinity to handle dragon deification) AxA = infinit Dream (fusion of both power to achieve greater height)

Ajuka said that the power that lie beyond DxD was something already inside Issei, by bet is that.