[Songfic] Cale loved letters. It all started when he played the idea of having a Pen Pal. He wasn't really expecting anything at first, but to his surprise, he got a reply back! It came from Korea, by the name of Kim Rok Soo. Cale was impressed when he read the letter. This Kim Rok Soo guy wrote in English with no errors in his grammar! Cale, intrigued, wrote back to the Korean and the latter wrote back. It went on and on until these letters were a part of their lives. A physical memory and a love story, those letters. Both Cale and Rok Soo are grateful for having each other in their lives.