Prachya Pinkaew (Ong-Bak, Warrior King), discovered JeeJa Yanin while casting another film: recognising that the diminutive Yanin – who took up Muay Thai because she was so skinny – was a movie in herself, he had her train for several years with Panna Rittikrai (who also trained Tony Jaa), then cast her as the autistic, yakuza-bashing lead in Chocolate.

Yanin plays Zen, who spends her days eating sweets and watching martial arts movies. When her mother is diagnosed with cancer, Zen and a friend find a book listing all the people who owe her money, and go about reclaiming these debts to pay her hospital bills. It turns out, however, that the book dates from her mum’s years as a yakuza money-lender…

All this, of course, is merely a thin excuse for lots of full contact, SFX-less fighting (the film finishes with some classic outtakes showing the hard-asses accident­ally hospitalised by Yanin). Chocolate is all about the incredible talent of Yanin, made even more spectacular by the incongruity of such a tiny, fragile-looking girl being such a mean fighter. Set pieces include a homage to Bruce Lee’s The Big Boss icehouse fight, a face-off between Yanin and another ‘differ­ently abled’ kid, and a climactic final sequence set high above the city streets. Probably not one for the politically correct.