'Frog Song' (2005) aka 'Enjo-kôsai monogatari shitagaru onna-tachi' Dir. Shinji Imaoka.

While undeniably eccentric, and frequently erotically explicit, 'Frog Song' has an abundant charm and winning whimsicality not often seen in Pink cinema. The lively, engaging protagonists love of manga is eminently relatable, Shinji Imaoka's skewed suburban sexcapades Frog Song is, like, a toadally awesome flesh flick!