Seo Kang joon's best drama for me, he played that introverted character with trauma very well, the story is the warm and cold same time and this is the best thing about drama, the book club part was so cute and I want to read all book they mentioned, the last episode was good but 15 was bad I really hate fl that episode and they ruined her all image in 1 episode, whenever I rw this drama I always skipped that episode, overall best drama!