User blog comment:Raababukk/Possible New Power ups for Issei Hyoudou/@comment-23853100-20131014054544/@comment-24047029-20131014185707

Well like what was mentions below I have a feeling maybe it might have to do with Issie now being a Humanoid Dragon and Issie merging with Ophis like how he recieved Great Red's power to use the Longius Smasher.