If the sudden appearance and disappearance of the typhoon bugged many people's mind. The sudden appearance and disappearance of Hana in Book 'n Chill Café was also bugging the loyal customers. They've seen her cheerful smile, her polite manners and her honest opinion regarding some matter that the customers would ask her.
Sometimes, she would even help some students who were having trouble with their studies. She wasn't just a mere employee in the café. She was like a consultant to most customers who frequent the place.
Ever since she fainted in the café and got hospitalized, her time in the café with the customers and other staff was getting lesser. She was absent from work for some reasons. Then, she decided to work as a part timer like Lily. Nobody delved deeper into her privacy and they had no idea what was really going on with her.