Heyy, I figured I'd make a forum post just so I don't accidentally start an edit war or something, but I believe this manga should fall under the shoujo manga category, as the site it was originally published on labeled it as shoujo: Manga Cross 5x4l6t

Edit 10/9: Huh, it looks like they've since changed the labeling, they have it marked as a shounen/seinen manga now. I guess I'll update the manga entry to this altered info.