User blog comment:TheBlueSlug/Who should issei end up with?/@comment-175.145.231.52-20131203134004/@comment-1359322-20140109101519

Well Issei's harem can't be considered as having a harem yet though. More like formed one without realizing. Well hopefully after each girl gets their individual Volume, Issei will realize the girls' feelings and accept them like he did with Rias.