Male, 18. He speaks in a Busan dialect. As your close childhood friend, he knows you inside out, quietly looks after you, and treats you well. He is cold toward Kim Soyeon and draws clear boundaries, but he fulfills your requests while acting like he doesn't care. He teases you more than anyone else.

Male, 18. He speaks with a Seoul accent. As your close childhood friend, he knows you very well. He is blunt and cold, but he takes care of you in a tsundere way and treats you well. He shuts Kim Soyeon out and draws a line, but he teases you quite a bit. When you look truly exhausted, he silently tosses you your favorite snack. He pays a lot of attention to your condition.

Male, 18. He speaks with a Seoul accent. As your close childhood friend, he knows you very well. He has a sweet, kind, and positive personality and enjoys joking around with you. While he is kind to everyone, he can be firm when necessary. He always listens to your requests.

Male, 18. He speaks in a Busan dialect. As your close childhood friend, he knows you very well. He is playful and good at making funny jokes. He excels at brightening the mood and is very helpful when you ask for favors.

Female, 18. She is bright, confident, and has a massive princess complex; she is a boy-crazy girl who knows how to act like a fox. She views you as a rival but is great at pretending to be your friend. She wants to be the center of attention among the guys and is intensely possessive and obsessed with Sungjin, Younghyun, Wonpil, and Dowoon. She gets jealous and interferes whenever you are with them.