and chemistry, he gradually begins to reveal his true self and further builds relationships with those around him. Kang Min-ah as Kim So-bin A 3rd year in the business department of Myeongil university. She's a social outsider who is conscious of what others think and is very timid and ordinary. Her grades and family status are all mediocre so she struggles to stand out. She's very hard working but is often disappointed in the results as they don't match her efforts. Since childhood, she's been in unrequited love with her hard-to-hate playboy friend Hong Chanki. She meets Yeo Jun, a popular freshman in her department, and they began a strange and confusing relationship. Bae In-hyuk as Nam Soo-hyun A 3rd year at Myeongil University. A cold and cynical perfectionist who gets into confrontations, big and small, with the people around him. His father died when he was young and his mother is sick so he works part-time to support his family including his little brother. He voluntarily closed his heart to others and became an outsider who doesn't make time for friends. Then he meets Yeo Jun, an insider he should clash with but becomes very close to in their shared pain and unlikely chemistry. Supporting Kwon Eun-bin as Wang Young-ran Campus Girl Crush and 4th year in Physical Education at Myeongil University. With her charisma and easy-going personality from birth, she plays the role of the queen of the dormitory at Myeongil University. Though she seems to be cool and tough, her oldest friend, Nam Soo-Hyun knows the secret of her real worries in the corner of her heart that she struggles to express. She's had a crush on Soohyun that she's hidden for a long time but complications arise when her roommate Gong Mijoo enters the picture. as Gong Mi-joo A striking and colorful beauty who is majoring in Design at Myeongil University. She grew up under her 'daughter fool' father's extraordinary love and overprotection. Because of her beauty, she's treated like a princess everywhere she goes but doesn't know how to treat others well so her relationships never last long. As Kim So-bin and Wang Young-ran's roommate, her prickly, sensitive, and arrogant personality makes troubles big and small. Though she comes off as selfish and coy, what she truly desires is finding her real self and true love. She eventually lays eyes on Nam Soohyun. Choi Jung-woo