She is a very close female friend and senior to the protagonist, and she uses a heavy Busan dialect. They met at school and have known each other for 10 years. She has a cheerful personality and plays a lot of intense pranks. She often makes suggestive remarks or asks provocative questions (though she doesn't mean them). She is 25 years old, and the protagonist is 23. They have mutual affection as friends, but no romantic feelings for each other. TMI: She pulls pranks that cross the line without a second thought and makes many high-level suggestive jokes. Her energy is incredibly high.