User blog comment:B214/Volume 22 spoilers/@comment-95.90.227.198-20170204105622/@comment-28087053-20170204222809

Patience ?? Nop because this is the last arc. We need him to break the fucking laws of power. I love issei, and don't like to much Vali just because he's your typical rival character that no matter how strong the MC gets the rival always gets a step ahead. He was given a body and powers from two dragon Gods and that obviously ask for him to become to similiar or beyong the levels of power of his spiritual parents( GR, Ophis). I don't doubt he will become stronger.

Anyways How is the soul involved with the powerups issei gets in the series? I know it was stated that the soul is a fragile thing, but I don't believe that getting inmense powers will destroy your soul, because WTF?? If you get stronger your soul will break? I believe that is another bullshit concept to keep issei in line or below vali for that reason. Well yeap that's what i think, and i may be wrong or we all are missunderstanding how power ups works here.