User blog comment:ThisIsReallyNotMyName/If everyone in Highschool DxD were in couples, who would they be grouped with?/@comment-23853100-20131007094236

Because it's the flow of the story? No offense to those one-on-one shippers but Issei getting a harem is one of the important part of the plot, his dream is to become a Harem King after all. If you can't agree to it, then don't read the Novel and don't watch the Anime.