This is a "Wild Mass Guess" entry, where we pull out all the sanity stops on theorizing. The regular entry on this topic is elsewhere. Please see this programme note.
High School Dx D
Issei will stay dead for real however, Ophis will replace him as the new Issei.
Because that would be hilarious to Troll the fanbase.
The entire reason why Ddraig and Albion started a huge fight was to figure out if breasts or butts were better.
Brought up by the fanbase thanks to Vali revealing his fetish for butts and the soul of one of the White Dragon Emperor users who thinks butts are wonderful too. And this is his Famous Last Words to Issei before committing a Heroic Sacrifice
