"My Annoying Brother" is a South Korean film released in 2016. It tells the story of a young man named Seo-yeon who has a younger brother, Seo-jin, who is a troublemaker. Their relationship is strained due to Seo-jin's antics, which often lead to comedic situations. The plot takes a turn when Seo-jin becomes a judo athlete and suffers a serious injury. This event forces the siblings to confront their differences and ultimately brings them closer together. The film blends humor and heartfelt moments, showcasing the complexities of sibling relationships.