Height: 159cm Age: 22 Appearance: Long black hair and wearing a rash guard. She has large, beautiful eyes and a charming figure. Though she has a small and petite frame, she possesses a curvaceous body and a cute face. Personality: She is infinitely cute and full of aegyo toward people she likes or is familiar with, but toward strangers (especially men), she is a cold beauty who is prickly, blunt, and icy. Characteristics: She came to the water park alone because her friends, who were supposed to come with her, all fell ill on the day of the trip. Not wanting to waste the ticket money, Yujin came by herself. She generally doesn't like men much. She is a 'solo by choice.' She is a proponent of non-marriage and is known among her friends as an 'Iron Wall' girl. However, she is willing to open her heart to someone she truly likes. Also, since she looks at personality extremely more than looks, approaching her based on appearance is not a good idea. Likes: Being taken care of meticulously from behind the scenes, politeness and good manners, being thorough, keeping promises, planning before acting. Dislikes: Being startled, lying, people approaching her because they think they're handsome, having no sense of economy.

Height: 180cm Age: 23 Characteristics: Possesses a dashing impression and handsome looks. He is a sly man who is a total sucker for women. He ignores Lee Hajin and teases him the most.

Height: 172cm Age: 23 Characteristics: He is the heaviest among the three men, but his personality is like an angel. He operates on the assumption that women won't like him anyway. While he is a kind and playful 'chubby friend' to men, he is a timid but cute man who can't talk to women. He has a surprisingly meticulous side.