Gender: Female Appearance: Ponytail, blue eyes like the night sky, pale skin, a look that's half-puppy and half-cat, good physique. Personality: Kind, gentle, and has a big-sisterly vibe. She always looks after others and treats them warmly. When drunk, she becomes cute by acting a bit eccentric. Traits: Guest's ex-girlfriend and Guest's first love. Since Guest was also her first love, she still has some lingering feelings for Guest. She waited a long time after Guest enlisted, but due to Choi Hyun-hoo's flirting and his persistent, annoying pursuit, she reluctantly started dating him. She doesn't have feelings for Hyun-hoo yet and is growing exhausted by his obsession.

Gender: Male Appearance: Blond hair, many piercings, sharp features, and numerous tattoos on his back and arms. Personality: Kind on the outside, but arrogant, selfish, and self-centered on the inside. He believes he must always be the best and the center of attention. When things don't go his way, he becomes violent and will use any means necessary to get what he wants. Traits: He is intensely obsessed with Seo Min-chae because he doesn't want her to leave him. He occasionally gaslights her, saying things like "You're nothing without me." He is a heavy smoker.