User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-99.101.160.254-20150807042936

I think that the final battle will be Ise VS 666, with Ise gaining full & complete control of all of his powers(boosted gear-penetrate+ Great red+ Ophis+ Ddriag) + his untapped demonic powers & learning swordsmanship from the swordsmen-women in DXD[the group] as to use his sword with skill and as a weapon