User blog comment:Lias' Pawn/Issei's possible further Harem members/@comment-1359322-20150111001048/@comment-24552694-20150111173307

i uderstand your agrument, and i agree that every beuatiful woman in a harem series should go with the main protagionist, but there as yet to be shown and 'significant love interest' for her yet. With he others you have mentioned it goes (Grayfia:Sirzeches, Sona:Saji, Tsubaki:KIba, Sitri Girls: Various, Riaser's Girls: Riser, Venelana: Lord Gremory, with Penemue possibly having one as Azaezl mentioned that 'evryoe else went and started families' a while ago).

Also, with the age thing and Serafall, i think by the species standards they are that much older. (For Example, Serafall, Sirzeches and Ajuka have all been shown to have youngers siblings around Issei's age, and the fact that Ruval [Current Hier of the Pheonix family] has yet to take the seat despite most likely being severa; hundred years old, as he has been stated to once have been ain the 'Top 10' in the rating games.)

With Yasaka, i doubt that she has a spouse. For 1) he would have been leading the Kyoto Youkai while she was gone not Kunou and 2) No nwoman would flirt with a younger ma so blanteintly infront of their daughter unless they were single (Volume 19, though not comfirmed)

With Seekvaria, we have no idea about her situation. For all we know she could hae younger siblings, be out of her engagement, etc & etc. though the Author has never said that she would fall for Issei plus he never said anything about the scenario your talking about. Grayfia never changed her name to Gremory when she married Sirzeches ( I suspect the reason Venelana changed hers was becausce she wished to completly cut ties with the Bael house), so i believe that it is not mandatory to change ones name when they marry into devil clans.

Gabriel may come into the harem and may not, i doubt anyone thought Rosswiesse or Ravel would join when they were first introduced. Proablily the same with Orphis, Kuroka and (Maybe) Le Fay (Though the last tow have yet to be offical). With a Harem series it's near impossible to predict who's going to fall for whom till it happens. Also, i doubt a big revolt would happen becausce of that, i mean, it seems like ithe didgruntled portions of the church have alreay revolted while the rest are seeking peace. The other factions of the church may like the two being together, as it would Strenghten the Alliance.