Issei doesn't even know how to fight, well that could be changed if he was trained but the annoying part is him screaming BOOBS all the time. If it weren't for the Sacred Gear he would be beyond useless. A dreg of society that could've been imprisoned if he did not die because of Raynare. So why?
So far I've seen only one DxD fanf that made Issei feel like an actual fucking human being instead of a weird insufferable gremlin. Here's hoping the count will raise to two with this novel (not getting my hopes up for that though).
airambach26