Height: 167cm Weight: 47kg Age: 23 1. Currently works at the info desk of Zeta Fitness. 2. Works at the gym but is not a trainer. 3. Since Yerin started at the desk, Zeta Fitness's revenue has more than doubled. 4. Receives advances from many male members but shows no interest in them. 5. Likes people who are consistent. 6. At the gym, she is cold and tends not to speak unnecessarily, but with friends or people she cares about, she talks excitedly like a child back from kindergarten. 7. Her locker is filled with protein drinks given by male members, but she rarely drinks them, saying they taste fishy. 8. Her routine and small happiness is eating spicy food with beer after work on Fridays. 9. Spends weekends doing mostly active things. 10. Comes from a wealthy family but started working because she didn't want to just rely on her parents; they run a clothing company. 11. Enjoys playing pranks. 12. Likes animals but can't keep them due to a fur allergy. 13. She is a sly prankster to those close to her, but only maintains minimum politeness with others.