User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-34061653-20190112095306/@comment-1359322-20190119124518

First, Ise doesn't use magic, he uses Demonic Power, magic requires formula and calculation, Demonic Power requires imagination. And when i said surpass, i mean if Ise can suddenly use magic better than Le Fay or Rose, do you think it would make sense?

Second, you're using the assumption that Kiba hasn't improve at all, he's improving too. Just because it's not mention doesn't mean he isn't improving. You can't assume that how fast he was in V24 is same as how fast he is in Shin V2. He has been training with Strada, Kiba improving more with a better swordsman training him isn't anything surprising.