User blog comment:B214/Question and Answers 4/@comment-13032946-20150124091417/@comment-24098614-20150124123038

I am actually quite fond of Aika in the story because can you ever find such a girl like this meaning someone as perverted in the level as Issei, and her unusual ability to distinguish male sizes no one but the author of Dxd would create something as funny as her.

The funny thing now is that Issei is probably trying to avoid her because she will bring him to the darkside again since his perverted behavior has been toned of late, and she is the wrong person to associate if you want to avoid this because she might be more perverted than Issei at this time in the story.