High School DxD Hero Episode 0: Holiness Behind the Gym

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Issei Hyoudou, a third-year high school student and member of the Occult Research Club, continues his life as a reincarnated devil. Alongside his master Rias Gremory and the rest of the club, he faces various supernatural threats and romantic entanglements.

This episode presents an alternative version of the final four episodes of the third season, offering a different perspective on the events that unfold behind the gymnasium. The story delves into a holy encounter that challenges Issei and his friends, testing their bonds and powers.

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