Japan is planning to implement artificial intelligence to police anime and manga pirating websites that the pop-culture powerhouse accuses of costing it billions of dollars in lost revenue every year.

There are at least 1,000 websites illegally offering free downloads of Japanese content, mostly its globally renowned manga graphic novels, a group of domestic publishers claimed earlier this year.

But under a ¥300 million ($2 million) pilot program proposed by the Cultural Affairs Agency, AI will scour the web for sites pirating manga books and anime, using an image and text detection system.

"Copyright holders spend a significant amount of human resources trying to manually detect pirated content online," agency official Keiko Momii said on Tuesday.

But human moderators can "barely keep up" with constantly proliferating illegal content, the agency said in a written statement.

The initiative features in the agency's supplementary budget request for this fiscal year ending in March.

It is inspired by a similar project in South Korea and, if successful, could also be applied to other illegally shared films and music.

Japan, the birthplace of comic and cartoon epics such as "Dragon Ball" and video game franchises from Super Mario to Final Fantasy, sees the creative industries as a driver for growth on par with steel and semiconductors.

In its revised "Cool Japan" strategy released in June, the government said it aims to boost exports of these cultural assets to ¥20 trillion by 2033.

Around 70% of pirating sites offering Japanese content operate in foreign languages including English, Chinese and Vietnamese, Japanese publishers say.

In 2022, Japan's gaming, anime and manga sectors raked in ¥4.7 trillion from abroad — close to microchips exports at ¥5.7 trillion, government data shows.