User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170331222853/@comment-31137559-20170401162140

Lilitifa Vepar(90% confirmed)

Kiyome Abe(I really doubt that Ishibumi is bringing her back into the story. I feel like he did the same thing to her that Toriyama did to Launch.)

Bennia(75%)

Roygun Belphegor(50% chance)

Tsubasa Yura(50% chance. My problem is that she is too similar to Xenovia.)

Gabriel(50% chance. Please Ishibumi!)

Serafall(25% chance. I could see him getting Serafall if he manages to snag Gabriel)

Milana Shatalova(10% chance)

Lint Selzan(40% chance)

Tiamat(50% chance. If she becomes his queen)

Telos Karma or Innovate Clear possessor(Depending on if one is a girl and becomes Issei's queen)