User blog comment:TheBlueSlug/Who should issei end up with?/@comment-23853100-20131029114820/@comment-115.135.14.176-20131030124649

Well using Blue's POV + the others. Maybe it'll be like this. Not that it's possible in the first place.
 * 1) Issei - Rias, Asia, Akeno, Koneko, Xenovia, Irina, Ravel, Rossweisse
 * 2) Vali - Kuroka, Le Fay
 * 3) Yuuto - Tsubaki, Tomoe
 * 4) Gasper - Valerie, Reya
 * 5) Saji - Sona, Momo, Ruruko
 * 6) Sairaorg - Kuisha