User blog comment:B214/Volume 23 discussion blog/@comment-81.135.248.15-20170321225847/@comment-31137559-20170322010445

It can only be Rias, Akeno, or Koneko then. Unless Gasper will join them, they use the gender-swap gun on Kiba, or Valerie and Lint join in. And they would have their weaknesses against Issei. Well probably not Koneko. But all Issei has to do is pull out a few moves on Akeno and say a few words and Akeno is dealt with.