User blog comment:Collbrande-Ex-Caliburn/Hyoudou Issei's Peerage composition hopes/dreams/hypothesis/@comment-26821288-20161228004608/@comment-9595671-20161228015044

Technically if you remember that in EX that all of Issei's harem/wives end up having big breasts, then that means technicalyl so far, all the girls in Issei's harem have huge oppai.

Heck he's got Rossweisse who's got the 4th biggest pair... atleast in the present, with how they say all of Issei's harem they could have all ended up around Rias and Akeno's size.

Makes me wonder if that though he had about using boost on Rias' breast possibly making them bigger is something he actually managed to achieve. It would make Sona's reaction to what Issei's kids said to her more comical atleast.

Well at the very least, if Bina's actually his permanent queen, then that's already one new face we've got... provided Bina isn't a character we've already met ^^;