User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-36663391-20180821131242/@comment-36663391-20180822133404

Maybe when Issei unloacking the GR power he get 6 wings( the 4 dragon's wing of GR and 2 devil's wing), and when he complete the DXD G for his use again but without dangerous  and reach AXA he could be have 12 wings. PS: After Issei have defeat Rizevim and Apophis he was already consider a candidate of Super Devil position