"Gaki ni Modotte Yarinaoshi" is a Japanese manga and anime series that translates to "I'm Going Back to High School" or "Going Back to My Youth." The series revolves around the story of Eiji Yushima, a former delinquent who gets a second chance at life after being involved in an accident. He decides to go back to high school to protect someone he cares about. Verified | The Office Korean Subtitles