User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-2605:E000:3E1A:4700:EC68:2A62:B660:F726-20190617183843/@comment-33359929-20190617185445

I'm sure at least some will die. Like Odin and Zeus, since Vidar and Apollon have become the heads of the Norse and Greek Pantheons, and having their respecitve leaders come back and become heads again would kinda invalidate the entire point of them being Heads of their Pantheons in the first place.