When Kim Taehyung was nine years old, his mother left this world. From the time Jung Hoseok came to Kim Taehyung's house for the first time, Kim Taehyung began to hate Jung Hoseok. He would often bully him when he was a child. Kim Taehyung felt at first that he would never regard Jung Hoseok as his relative or brother, but it was not until he was fifteen years old, when his father and Jung Hoseok's mother died in a car accident, that everything changed...