Saint Seiya: Meiou Hades Meikai-hen
English title: Saint Seiya: The Hades Chapter - Inferno
Japanese title: 聖闘士星矢 冥王ハーデス冥界編
Type: OVA
Episodes: 12
Source: Manga
Genres: Action, Adventure, Fantasy, Sci-Fi
Studios: Toei Animation
Duration: 24 min per ep
Rating: PG-13 - Teens 13 or older

Seiya and the rest of the Bronze and Gold Saints who have survived the Sanctuary battle have entered the world of the Dead. They are fighting to get to Hades and defeat him.

(Source: ANN)