User blog comment:B214/Talk About What You Want! 2/@comment-24098614-20140624072740/@comment-24866657-20140624090138

I don't think it's a good thing if Serafall joins Issei's harem, her position as a Demon Lord is important with all the potitic things and Sitri's house, it would make others question her responsibility and capability to be one of the leaders in the Devil Faction, also it's kinda hard for the other girl in Issei's harem to competent with Serafall, the same case with Gabriel, both of them would think about their position more and not just joining Issei's harem like that, personally I think they better not joining Issei's harem.