The country's king of elderly porn, Shigeo Tokuda, 74, might look like an average Japanese grandfather but appearances can be deceiving. Porn is a fast growing niche market in this greying society.
A former travel agent who quit his job just four years ago, Tokuda has stretched the limits of eroticism among the silver-haired, overturning social norms in a country where people are expected to grow old gracefully.
Although he hardly stands out in a crowd at 160 centimeters (5 foot 3 inches) and carries a paunch, Tokuda's 15-year X-rated acting career and his appearances in more than 300 hardcore sex movies have silenced his detractors.
"I've always wanted to do something different, things people don't normally do," he said one recent afternoon in his small office, wearing a nondescript sweater and looking like the "salaryman" he once was.
Since his top rival died recently at the age of 90, Tokuda has become the country's undisputed king of Japanese "mature porn" a category that has flourished in the fast-aging society since it emerged a decade ago.
His latest series of no-holds-barred blue movies, dubbed the "Tokuda Project," includes such titles as "Forbidden Elderly Care" and is advertised with slogans like "Oh, What Pleasure... Don't be Ashamed of Getting Old!" and "Lust is Medicine".
The oldest porn actress Tokuda co-stars with is 72-year-old Fujiko Ito, featured in some of the titles frolicking in hot springs with Tokuda or on traditional tatamis, wearing a kimono.