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. 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.