Sanzoku Diary
Genres: Slice of Life
Type: OVA, Episodes: 1
Aired: Jun 23, 2015
Studio: DLE
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
Bundled with the limited edition sixth volume of the manga. It will be between 10 to 15 minutes long and will adapt the events of the first volume.

(Source: MAL News)

The hero and author of Sanzoku Diary is Okamoto Kentarou. When he was young, he lived out in the country, and he knew an old man who was a hunter. In 2009, Kentarou was inspired to leave Tokyo and return to Okayama Prefecture to become a hunter himself. Using an air rifle and traps, Kentarou hunts, prepares, and eats various animals. The manga covers all his hunting-related activities in close detail. 

(Source: MangaHelpers)