Hebi ni piasu (2008)

While alone in a nightclub, straight-laced Lui meets sensitive but troubled punk kid Ama. Mesmerized by his split tongue, she becomes obsessed with body modification and soon wants the same treatment. After Ama's heavily-tattooed friend Shiba pierces her tongue, Lui finds herself inexorably drawn to both men – and to her growing list of desires, she now adds a tattoo.