User blog comment:B214/Question and Answers 2/@comment-4547267-20140228051909/@comment-24651810-20140307033051

Akeno would take the hit the most. Azazel hinted to Issei that if he really did die she wouldnt be able to take the stress a second time. She would break. Though it is an interesting question considering Rias held on to the faint hope he was still alive compaired to akeno that time. They could very well both break.

Since they are shown as equals throughout the story the same thing probably will happen emotionally.