User blog comment:B214/Question & Answers 5/@comment-4547267-20150829172103/@comment-24098614-20150901230953

I only read the good ones that appreciate his character but the term for this is Harem stealing,and I have gotten on their case on this for example SoulReaperCrewe and Engulfing Silence are good examples of Authors who do a good job on Issei the worst one had Issei killed to have his Sacred Gear to himself.

You have to remember also that this is a Fanfic, and some people prefer their characters over Issei because in the beginning Issei is just a perverted character with good traits until the story progresses,and he becomes much better.