Winter Fairy

At a cafe, an ordinary female protagonist meets a barista named Nam-ju. They continue to run into each other frequently, for some unknown reason. She develops a crush on him, and they occasionally meet up for a chat. However, after winter, Nam-ju disappears from view, and she begins to harbor suspicions. Her curiosity grows, and she eventually discovers his true identity. If you're curious about his true identity, just read the entire story... (You idiot author, it's already in the title... coug