User blog comment:B214/Volume 23 discussion blog/@comment-77.188.244.180-20170422173639/@comment-31137559-20170423014652

Train harder? In Volume 9, he sparred with Sairaorg and was kind of an even match for Sairaorg(sealed). One volume later was able to take Sairaorg's unsealed touki punch to the face without even losing any momentum. In Volume 16, just achieved the Dividing Wyvern Fairies. Next volume was able to change them from white to red. And Issei doesn't train hard? What training are you expecting. Issei is Satan-class after being a devil for only a year and starting to use his powers a year ago. And he doesn't train hard to get to that level?