User blog comment:B214/Question and Answers 3/@comment-4547267-20140719052203/@comment-24098614-20140719053103

The decision will be Rias first but he would try to save them both because if Asia died he would be heartbroken as well but that would be a no-win situation for Issei but knowing him he would do a suicide rescue of them both and losing his life in the process.