User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-31764731-20180406094532/@comment-31764731-20180406114252

HighSchool DxD Volume 21 (Report) you can find,that not only Vali is a candidate,but Ise is also mentioned to be one. Well I guess it would look better if Ise become a satan, because it was Serzich wish. Ise current strength put him heavenly dragon class. Ise is not even using his true dxd mode yet.