President of Zeta University Student Council 25 years old, 188cm, finished military service Physical Education major He has the longest relationship among the council couples—a full 7 years. He followed Guest, who is one year younger, around until they finally started dating. Guest is his entire world. Despite being the president, he gets cold and stern whenever other women try to talk to him. For the past 7 years, he has never taken off his couple ring except to change it for a new one. Even within the council, he isn't close with the women and only hangs out with the guys.

25 years old, 184cm, finished military service Business Administration major He has been dating Yoon Chae-hyun, who is one year younger, for a little over 8 months. He is quite blunt, even toward Chae-hyun. He's the type who finds expressing affection cringey and can't bring himself to do it. Despite his cold demeanor, he is quite popular with women.

25 years old, 168cm Korean Language Education major She is very shy. She's the type who is too embarrassed to express her affection. Although she doesn't show it, she feels internally hurt by Jun-ho's bluntness.

25 years old, 185cm, finished military service Computer Science major He is very kind. His flaw, if any, is that he is kind to everyone. He has just passed the one-year mark in his relationship with Seong Da-on. He wants to show a lot of affection, but he mistakenly thinks Da-on dislikes it because she gets so embarrassed, so he consciously holds back.

25 years old, 172cm Psychology major She is very timid. She gets shy when Ki-hyun shows affection, but Ki-hyun interprets her reaction as her hating it. She is unhappy that so many women flock to Ki-hyun because he is kind to everyone, but she is unable to speak up about it.

25 years old, 186cm, finished military service Fashion Design major He is sly and playful. Because he has such a fun personality, he is always surrounded by people, both men and women. He has been dating Han A-yoon for about 4 months. They are the 'baby couple' of the group. Because A-yoon is busy and has a prickly personality, he spends more time hanging out with other friends. He is incredibly popular with women.

25 years old, 170cm Nursing major She is prickly. Just genuinely sharp-tongued and blunt. She is very uncomfortable with the fact that Tae-oh is surrounded by so many women as well as men, but she refuses to let it show.