User blog comment:B214/Volume 21 info & spoilers/@comment-25915118-20160318151828/@comment-3965848-20160318184516

From the pic it seem like she is in front of Issei and I get the feeling that the two at the back are setting up her to be part of his harem which would to the birth Ernestine Galnstein, since Azazel and maybe Sirzech still recall the events of EX.