Twelve years ago, Nam Jihyun ever binds a simple promise with a boy who had always she loved, Kim Jongin. After Jongin moved to China, Jihyun continued to wait along with the promise they’ve ever made. For her, Jongin is a very precious someone to her. Because after Jongin left away, she felt alone. The first year in junior high school to be the year where she met with her new best friend who always keep her after Jongin left, Kim Taehyung. Without ever realizing that Taehyung has a d