Y/N never expected her life to change because of one letter. When she transfers to an elite international school in Seoul, she hopes to learn more about her mother’s past and experience life somewhere new. What she doesn’t expect? Roommate drama, secret crushes, complicated friendships… and Rin Yamaguchi, the quiet, mysterious boy who seems determined to keep everyone at a distance. But the more Y/N tries to figure him out, the more she realizes Rin might be hiding something.