Little people in porn are nothing new, from the X-rated starlet who called herself Bridget the Midget to her diminutive compatriots, Mini Mya and Lady Gangsta.

But Japan’s smut sensation, Kohey Nishi, standing just 3-foot-6, threatens to outdo them all. He may be small, but he’s huge among his nation’s pervs.

Nishi, 24, looks like a little boy — but earns a fully adult living by getting it on with ladies who look old enough to be his mother.

Formerly a computer programmer, the adult film actor and director got his entree to the porn world through a drinking buddy, who introduced him to Japanese porn mogul Ganari Takahashi, Vice reports.

Almost overnight, Nishi began capitalizing on his youthful look — a trait that makes him particularly appealing to his fans (mostly the younger set and women, he says). And he has the market cornered: “There is no one who is an adult and looks like a kid more than me!” he enthused to Vice.

That he can’t stand on his own feet for more than five minutes or open a bottle without assistance does not turn off fans. They are even accepting of his films’ ridiculously unwieldy titles such as “Having Sex in the Magic Mirror Box Car with a Female College Student with F-Cup Breasts Who Wants to Be a Kindergarten Teacher.”

As far as Nishi is concerned, his line of work particularly suits somebody with his condition: an incurable disease known as mucopolysaccharidosis, which halts growth and leaves him vulnerable to spinal cord injuries.

“Usually porn shoots are done while I am on a bed, so I have no problem with it,” he told Vice.

He added, however, that he faces at least one challenge that plagues all porn actors: “Although it has nothing to do with my disabilities, it’s very difficult to get an erection when you are surrounded by many people and directing your shooting crew.”

Although Nishi acknowledged that his sexy new career track has upped his game with the fairer sex, he maintains that he’s not in it just for the money and the babes. He hopes that his work will have a positive impact on society by “prevent[ing] children from being sexually abused, just like war movies and shooter video games can contribute to peace.”