Ji-hae's friend is having problems expressing her feelings to the boy she loves, so she asks Ji-hae to write e-mails to him in her name. As the boy falls in love with her letters, Ji-hae discovers the story of her … Son Ye-jin, Cho Seung-woo, Jo In-sung, Lee Ki-woo, Seo Young-hee, Lee Joo-Eun, Park Do-Yoo Added on Netflix 2023-01-10. Youtube Trailer