DAY7

One day, Kim Yeondoo, an ordinary high school girl, is suddenly terrorized by her former friend from middle school and stalker in KakaoTalk. In order to stop this, she changes her profile picture to a picture of a random guy and posts him as her boyf

On his first day working as a new teacher at his alma mater, Sunny Day Boys High School, Lee Taesung is welcomed by the bright and sunny smile of Seo Sunny, a warmhearted chemistry teacher. Feeling immediately drawn to Sunny, who resembles his first