Bleak Night (2011)

After a former high school bully takes his own life, his father embarks on a relentless journey to uncover the truth behind his son's tragic decision. As he delves deeper into the boy's past, he confronts painful memories and the harsh realities of teenage life, revealing the complex dynamics of friendship, betrayal, and the pressures faced by adolescents. Each revelation brings him closer to understanding not only his son’s struggles but also the darker side of youth culture, challenging him to confront his own role in the events leading to this heartbreaking outcome.