The mischievous Yan Yu runs into Shen Jiayu again when she starts high school. He was the older boy who had always been by her side when she was little. With his handsome face and steady nature, it's hard for Yan Yu not to fall for him. She makes no secret of her crush, never realizing that he thinks it's only admiration.
Everyone knows Yan Yu likes him, but no one knows Shen Jiayu has liked her for a long time, too. Every time he treats her like a little sister, it's because he likes her...
Theme: Love begins without knowing why, then grows too deep to turn back.
