User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-54.158.126.18-20150723000735/@comment-110.22.99.149-20150723135412

To use Diabolus again Ise would have to raise his base stats, the closer he gets his base to his new power up will make it easier for him to use Diabolus again in the future, it's really the same as every other time he has got a new power up, just this time it may take years instead of a few months, i guess that's the good thing about being a devil time is on his side :)