Meeting the Hosts and Prelude

Two ordinary humans reborn as mighty devils are about to clash to the death.

Issei Hyoudou the Breast Dragon Emperor, versus Naoki Kishima, The Demi-Fiend or Hitoshura.
Sacred gear or Magatama? Highschool DxD or Shin Megami Tensei? Dragon or Demon? Harem King or Chaos King? Who will win a DEATH BATTLE?