Salary Man Kintaro

Retired ex-bike gang leader of the "Hasshu" Kintarou Yajima leaves his hometown where he worked as a fisherman until his wife, Akemi, passed away. With his son, Ryouta, they go to Tokyo, where Kintarou would start with his new job: a salaryman. Now, the question is: would Kintarou be able to handle the office work and office politics being a salaryman brings?

(Source: Manga Planet)