User blog comment:B214/Volume 22 spoilers/@comment-95.90.227.192-20160812115346

Haha Issei is an exception among exceptions :D To High Class Devil in less than one Year ! Good bridge to EX really Goody Volume and hope that it will take not long for Vol 22 :) For the Translators : Absolute Good Work, you are amazing!

What Guys do you think ? Who will Issei join ? Shiva or Indra ?

Also I hope he chose Shiva ! Unlike Indra he is not a jerk and knows when to stop. #

And how long do you think will it take Issei to become a Ultimate Devil ? I will say after the IRG ! He is just the Exception among exceptions :p Hope he will now will use his Brain more and look in the Magicfield to learn  ! And what he should do first perfect his True Queen and Diabolous Dragon so that it will be just as great if not better than the not nerfed Version.