Only Nine Years of Happiness (2012)

A young man is recounting events in his childhood that led him to where he is to an unseen person. Next we see him as a child around 10 years old who is a lonely boy at school that is befriended by the school workman. At first, the workman is the only source of emotional warmth and kindness in his life. Things deteriorate quickly and we eventually come to understand both the impact of those childhood events as well as the true nature of the opening scene.