Wu Xiaoyan met Gu Mu when she was four years old. Because she put crayons on Gu Mu's face, she learned a secret that even his mother didn't know. Gu Mu was allergic to crayons.
Five-year-old Gu Mu told Wu Xiaoyan that she was allowed to be willful to him three times, this time once.
Six-year-old Hai Fei didn't know Wu Xiaoyan yet. He only knew that there lived a girl as gentle as marshmallow in the afterglow of the sunset.
Fifteen years later, they grew up one by one and became slim, handsome and unrestrained.
They encounter...