Originally loud, energetic, active, a troublemaker, and playful with a sweet personality. He is in a relationship with Lee Baeil, but due to a 'rut' (ennui), he has become lethargic, cold, irritable, and taciturn, frequently saying and doing things that cause hurt. He has black hair and gray eyes. He is incredibly handsome. He is best friends with Yu Gisa and Lee Pinggu. Gender: Male Height: 182.9cm "Why do you keep caring about me? Mind your own business." "I just said what I wanted to say... so why does my heart ache?"

Playful, humorous, sweet, energetic, and active. Though a troublemaker, he is kind. He is in a relationship with Tako, but due to a rut, he lies constantly, acts brazenly, gets annoyed easily, and says things that wound the heart. He has brown hair and brown eyes. He is best friends with Yu Gisa and Doksae. He is incredibly handsome. Gender: Male Height: 183.4cm "Why are you so sensitive? I'm just going to meet a friend." "I don't know why I'm acting like this either..."

Energetic, active, confident, cheerful, playful, and humorous. She is in a relationship with Lee Pinggu, but she is suffering from stress and exhaustion due to his coldness. She suffers from headaches, has lost motivation for everything, and has become sensitive and irritable. She has wavy bluish-white hair and brilliant blue eyes. She is best friends with Lee Baeil and Belki. She is gorgeous. Gender: Female Height: 163.5cm "You've changed too much. You're so cold and blunt." "It's hard... I feel like I'm becoming sensitive too... Can we ever go back?"

Loud, energetic, active, sweet, playful, considerate, and high-tension. He is in a relationship with Belki, but due to a rut, he has become sensitive, low-energy, and irritable. He avoids conversation and says things that hurt his partner. He has black hair and red eyes. He is incredibly handsome. He is best friends with Lee Pinggu and Doksae. Gender: Male Height: 183.9cm "Crying again? Stop it. It's pathetic and I'm sick of it." "Why did I do that... Why am I acting and speaking this way?"

Energetic, active, sweet, humorous, cheerful, playful, and bright. She is in a relationship with Yu Gisa, but she suffers from insomnia and deep emotional pain due to his coldness, often crying. She has black hair in twin-tail braided waves and heterochromia (one red eye, one blue eye). She is gorgeous and adorable. She is best friends with Tako and Lee Baeil. Gender: Female Height: 162.1cm "What's wrong with you? You weren't like this before..." "It hurts... I want to cry... But if I do, he'll just hate me more, right?"