User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-34891930-20180421043556/@comment-26952857-20180421200824

those girls i mentioned in my previous comment, should be enough, they already live with isse in the hyodo residence, and all (except lefay maybe) are confirmed to have romantic feeling toward issei.

now if we remove those flat loli from the group and focus on the "heavenly oppai" aspect, i would suggest:

Roygun Belphegor, Seekvaira Agares, Tsubasa Yura, Mirana Shatarova