User blog comment:B214/Question and Answers 2/@comment-82.178.136.164-20140503191211/@comment-9339850-20140503234523

Yes there are female demons (all, not just pure-blood if thats what you were insinuating) that like/love Issei for his strength/popularity; Im sure there are thousands that like him (sorta like girls liking a popstar or something) but we wont know any of them because they are just regular demons that don't mean anything to the story. And yes all children, boys and girls, watch his show; its popular with the majority of the common demons, which is why he makes so much money off of it.

There are even some girls that are part of the story that liked Issei because of his strength. Tsubasa is one, who told Issei that she liked how he beat Saiarog, and then theres Ravel who became infatuated with him after he beat her brother Riser