User blog comment:B214/Question and Answers 6/@comment-50.139.232.230-20161016013521/@comment-1359322-20161016030749

Issei's skill is pretty much the same as before too you know. He still uses [Boost] and [Transfer] as his main fighting style, sure he has more arsenals like the Wvyern etc but his general fighting skill is still around something like charge up his cannons for wide scale attack. In that sense, Issei isn't really getting new skills too.