Shizukanaru Don: Yakuza Side Story
Japanese title: 静かなるドン Yakuza Side Story
Type: OVA
Episodes: 1
Source: Manga
Genres: Action, Comedy, Drama
Producers: Tokyo Movie Shinsha
Duration: 45 min
Rating: R+ - Mild Nudity

This manga depicts the life of Shizuya Kondou, a man who designs underwear by day and is "don" of a gang at night.

(Source: ANN)