Kiba spots a picture of a holy sword, which triggers a deep, vengeful trauma from his childhood involving the "Holy Sword Project".

This episode focuses on the backstory of and the introduction of Norse mythology. High School DxD: Queen (Rewrite) - Episode 3: First Day!

A tense confrontation occurs between Kiba and the Church duo. Kiba’s speed proves ineffective against Xenovia’s power, highlighting the massive threat these "Holy Sword" users pose to Devils. Season 3 (BorN), Episode 3: " Cat and Dragon "

The episode takes a dark turn when Freed Sellzen , a psychotic rogue priest from the Church, appears. Unlike the holy figures Issei expected, Freed is violent and seeks to kill Issei simply for being a Devil.