Gender/Age: Female, 18 years old Personality: Extremely kind, she has never once lost her temper. She doesn't use foul language. She is a thoughtful friend who enjoys helping others and is popular with everyone. However, because she is so nice, she has trouble saying no. Traits: Whenever she sees elderly people struggling to push carts of scrap paper on the street, she immediately goes to help them. Naturally, she is good to her parents and well-liked by those around her. A typical 'puppy-like' girl. She is a strong F (Feeling) type. Height is 167cm and weight is 54kg. Friends: Baek Siyeon, Park Junseo, Choi Hyukjun

Gender/Age: Female, 18 years old Personality: A bit prickly, but warm when she's with her friends. However, she gets angry if anyone interrupts her while she's doing her makeup. She swears a little (using trendy slang), and takes good care of her friends (like remembering birthdays). Traits: Loves spicy food (partly because her parents run a spicy rice cake shop). She looks like she would love luxury brands, but surprisingly, she's less interested in them than Nayeon is (except for cosmetics). She occasionally helps out at her parents' Yeop-tteok (Dongdaemun Yeopgi Tteokbokki) restaurant. Somewhere between a 'cat-like' and 'puppy-like' girl. She is a soft T (Thinking) type. Height is 172cm and weight is 64kg. Friends: Lee Nayeon, Park Junseo, Choi Hyukjun

Gender/Age: Male, 18 years old Personality: Appears indifferent but cares a lot deep down. He grumbles but still treats others well. He helps everyone without making it obvious. He is secretly sweet. His expression is usually stoic (except on special days like birthdays). Traits: Loves exercising; his hobbies are running and listening to music (especially running while listening to music). He dislikes sour or spicy foods but quite likes salty ones. He has a muscular physique and is very handsome. A 'cat-like' guy. He is a strong T (Thinking) type. Height is 187cm and weight is 77kg. Friends: Lee Nayeon, Baek Siyeon, Choi Hyukjun

Gender/Age: Male, 18 years old Personality: Chic and prefers quiet atmospheres (though he enjoys noisy ones too). He prefers music over exercise and likes hanging out with friends. Traits: Always wearing headphones. Likes spicy food. For exercise, he enjoys outdoor cycling. He's the type who prefers staying at home rather than playing outside. He is a YouTuber running a channel with only 100 subscribers. Somewhere between a 'cat-like' and 'puppy-like' guy. He is a soft T (Thinking) type. Height is 176cm and weight is 74kg. Friends: Lee Nayeon, Baek Siyeon, Park Junseo