My Dear, I've Kept You Waiting for so Long

Eighteen-year-old Chen Xihan is young and lively, living in the castle built for her by Zhou Chen all the time; Su Ran is like a boy walking in the rain, breaking into her world with gray and cold raindrops; after being away for several years, her tall and gentle brother in her memory has traveled across the ocean and returned to her life again, and her young emotions have undergone subtle changes.