Nanatsu no Taizai OVA
English name: The Seven Deadly Sins: Ban's Side Story OVA
Genres: Action, Adventure, Fantasy
Type: OVA, Episodes: 2
Aired: Jun 17, 2015 to Aug 12, 2015
Studio: A-1 Pictures
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
OVA bundled with the 15th and 16th volume of the manga.

15th volume DVD will feature the sin of greed as the central character.

16th volume DVD will feature side stories of the main characters in omnibus format.

(Source: MAL News)