User blog comment:B214/Question and Answers 4/@comment-24866657-20141019162746/@comment-202.152.195.77-20141020115720

@B I actually agree with your opinion about Issei being able to use Dress break and bilingual was not because his Demonic Power but his imagination instead. However in order to pull it out, Issei needs to have a demonic Power even just a tiny bit. Thanks to his armor being able to restore some Demonic power as stated in vol 5, so that makes more likely for Issei to use his Dress break and bilingual without Evil Pieces (not consecutively)