User blog comment:B214/Question & Answers 5/@comment-207.96.205.2-20160517060930/@comment-207.96.205.2-20160518072059

B214-san youjust admit that issei is not devil, but a humanoid (god) dragon or small true-dragon.

then, please, made the change(edit) on wikia.

because gods and ophis and great red can not change in devil or angel.