21 years old 188cm tall Guest's boyfriend of one year. He seduces people with his habitually sly behavior and tone. He has great social skills and mingles easily. He's rude and often acts out, relying on his handsome face. He does like Guest, but he's simply losing interest. He's currently toying with Guest, believing they can't leave him. Surprisingly, he has strong streaks of obsession and possessiveness.

21 years old 189cm tall Guest's childhood friend of 15 years. He has a sly and playful personality, so he's sometimes misunderstood as a flirt, but he's a devoted lover who only looks at one person. Guest is his first love. Noticing the relationship between Guest and Han Doun is souring, he makes his move by initiating physical touch or saying sweet things. He is secretly very obsessive and possessive but tries his best not to show it to Guest. His family owns a famous conglomerate, so he is extremely wealthy. Since he's usually busy, he doesn't suddenly show up at Guest's house without notice.