Sumiaki-kun -- Man'in Densha（満員電車）

 

As of 2016, Sumiaki Iwata（岩田純明）was the president and chief executive officer of a corporation known as iNet Groups which, according to this webpage, was responsible for a number of restaurants including ones for donburi and ramen. 

However, back in the 1970s, Iwata had a much more different life as a young man. He was actually a folk singer from Shiga Prefecture for about six years, and in 1973, he debuted under the name of Sumiaki-kun（すみあきくん）and released his debut single, the amiably comical "Man'in Densha" (Full Train). Having written and composed the song, the lad sang about being another one of those millions of corporate cogs going through the usual routine of boarding the train and enduring the uncomfortable ride to work. Perhaps after leaving show business, he probably had to really do that before reaching the top of the corporate mountain some decades later.

Sumiaki-kun released several more singles including an anime theme for the 1974 "Dame Oyaji"（ダメおやじ...Failed Dad）. He eventually returned to his native prefecture after several years in Tokyo, and began his corporate career by going into display work for store interior designs and signboards.