Divide  (2006)

Theatrical Release Information:
Divide

A high school student who has recently lost her mother risks it all to connect with the sister she never knew in this harrowing drama from actor-turned-director Masato Tsujioka (Bullet Ballet, A Snake of June). When Saki's mother died, the grieving high school student soon fell in with a serpentine high school pimp and his fearsome band of followers. Now Saki's former group of friends can't even recognize the once-happy girl anymore, but little do they realize that there is an explanation for their classmate's disturbing transformation. As a young child Saki was separated from her sister, and now the only way to locate her sibling is to plunge herself headlong into the sordid underworld of sex and violence. But as the damaging effects of exposing herself to this dangerous lifestyle slowly begin to take their toll on Saki, she senses that she is closer than ever before to finally unlocking the greatest mystery of her secret-shrouded past. ~ Jason Buchanan, All Movie Guide