56-year-old ‘invisible millionaire’ with passion for tidiness flies under the social radar, says simple life makes him feel ‘really good’

A man in Japan who earns 30 million yen (US$203,000) a year from rent and investments insists on continuing to work as a janitor to stay healthy and active.

Koichi Matsubara, 56, cleans public areas and carries out basic maintenance in a block of flats in Tokyo, according to the Japanese media outlet The Gold Online.

Matsubara reportedly works a four-hour shift three days a week.

The janitor job gives him a monthly income of 100,000 yen (US$680), much lower than Tokyo’s average salary of 350,000 yen (US$2,400).