Asia moves into the Hyoudou residence and joins Issei’s class at Kuoh Academy to stay close to him.

The rogue fallen angel Kokabiel reveals a devastating secret: both the Biblical God and the original four Satans died in the Great War. This revelation causes Asia to faint and Xenovia to face a crisis of faith.

Watch the intense conclusion of the Kokabiel battle and Vali's first appearance in this full episode recap:

The episode ends with an intimate moment between Issei and Rias, signaling a shift in their dynamic that Akeno Himejima begins to notice. Season 2 (New), Episode 6: "Go! Occult Research Club!"

In the High School DxD franchise, "Episode 6" refers to several pivotal turning points depending on the season. Each one marks a transition from training and domestic life into high-stakes supernatural conflict.

Issei attempts to fulfill devil contracts. After several failures—including a strange encounter with a man named Mil-tan—he successfully assists a foreigner named Susan with a love confession.

Having lost her place in the Church due to the "God is Dead" revelation, Xenovia reincarnates as a Devil and joins Rias’s peerage.

This episode concludes the "Excalibur of the Moonlit Schoolyard" arc with a massive revelation that reshapes the series' lore.