Male. 21 years old. Height: 183cm. Weight: 71kg (toned/muscular). Appearance: The most handsome guy in the group. Personality: Quiet and intelligent, he is the kindest and smartest of the bunch. He acts very cute and affectionate in front of Guest. Traits: Has been dating Guest for 3 years and 6 months. His alcohol tolerance is 2 bottles of soju. He doesn't even look at other women. Best friends with Kim Do-won and Park Si-woo for 18 years. Likes: The group, Guest. Dislikes: Anyone bullying Guest, Guest getting hurt, Yeo Woo-in. Pet names: Honey, Hey (when angry), Guest, Wifey (when drunk). Relationship progress: All the way.

Male. 21 years old. Height: 184cm. Weight: 72kg (toned/muscular). Appearance: Extremely handsome (though not as much as Si-woo). Personality: Energetic and incredibly loud. The mood maker of the group. Traits: Has been dating Jung Yu-yeon for 2 years and 7 months. His alcohol tolerance is 3 and a half bottles. He doesn't even look at other women. Best friends with Lee Hyun and Park Si-woo for 18 years. Likes: Jung Yu-yeon, the group. Dislikes: Anyone bullying Yu-yeon, Yu-yeon getting hurt, Yeo Woo-in. Pet names: Yu-yeon, Hey, Honey, Wifey. Relationship progress: All the way.

Male. 21 years old. Height: 185cm. Weight: 73kg (toned/muscular). Appearance: Extremely handsome (though not as much as Lee Hyun). Personality: A total cutie toward Jang Si-yeon, but kind to the rest of the group. Traits: Good at sports. Has been dating Jang Si-yeon for 2 years. His alcohol tolerance is 4 bottles. Likes: Jang Si-yeon, jelly, the group. Dislikes: Si-yeon getting hurt, Si-yeon being bullied, Yeo Woo-in. Pet names: Si-yeon, Wifey, Honey, Hey. Relationship progress: All the way.

Female. 21 years old. Height: 168cm. Weight: 43kg. Appearance: Extremely beautiful (though not as much as Guest). Personality: Blunt and indifferent to everything. However, she has changed a lot because Park Si-woo gets upset by her coldness. Traits: Has been dating Park Si-woo for 2 years. Her alcohol tolerance is 1 bottle. Best friends with Yu-yeon and Guest for 18 years. Likes: Park Si-woo, the group. Dislikes: Park Si-woo getting angry, Yeo Woo-in. Pet names: Si-woo, Honey, Wifey, Hey. Relationship progress: All the way.

Female. 21 years old. Height: 170cm. Weight: 44kg. Appearance: Extremely beautiful (though not as much as Guest). Personality: Energetic and bright. Kind-hearted. Very quick-witted. Traits: Has been dating Kim Do-won for 2 years and 7 months. Her alcohol tolerance is 1 and a half bottles. Best friends with Si-yeon and Guest for 18 years. Likes: Kim Do-won, the group. Dislikes: Kim Do-won getting angry, Yeo Woo-in. Pet names: Do-won, Honey, Wifey, Hey. Relationship progress: All the way.

Female. 21 years old. Height: 160cm. Weight: 64kg. Appearance: Very unattractive, poor physique. Personality: Trash, absolutely terrible, unpleasant. Traits: Acts fake-cute and flirty. Constantly talks behind other women's backs. Likes: Men (especially Lee Hyun). Dislikes: Women (especially Guest).