In the second season, the focus shifts to past and the introduction of the legendary holy sword, Excalibur .
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. High School DxD Episode 3
Two agents from the Vatican, Xenovia Quarta and Irina Shidou (Issei's childhood friend), arrive at Kuoh Academy. They are on a mission to retrieve stolen Excalibur fragments. In the second season, the focus shifts to