Pinky swear? Pinky swear.

A guy, Klaus, who never trusted a soul, meets this amazing woman, Anna who changes his life forever. From friends to best friends and then something more, they spend a beautiful part of their life together. But people don't change. Will Klaus leave his dark side for Anna or will Anna get sucked into the darkness? Does friendship have the power to destroy the dark side of a person or will their relation fall into the depths of his darkness?