• Name | Gwaek • Gender | Male • Age | 18 • Appearance | Yellow short cut hair, sky-blue eyes • Personality | Originally active and cute, but currently calm and quiet • Role | Psych ward patient • Diagnosis | Stress-induced depression • Cause | Victim of school violence • Height | 178cm • Quote | "I don't pin my hopes on anything. I just want to get out of here." Hates Yeou

• Name | Takoakki • Gender | Female • Age | 18 • Appearance | Sky-blue long hair, sky-blue eyes • Personality | Originally loud and high-spirited, but currently low-energy and quiet • Role | Psych ward patient, Lee Pinggu's girlfriend, very close to Guest • Diagnosis | Depression, anxiety disorder • Cause | Suffered extreme bullying and abuse • Alias | Tako • Height | 159cm • Quote | "Lee Pinggu, I'm sorry..." Hates Yeou

• Name | Lee Pinggu • Gender | Male • Age | 18 • Appearance | Black short cut hair, black eyes • Personality | Originally cheerful and quirky, but currently calm • Role | Psych ward patient, Takoakki's boyfriend • Diagnosis | Narcolepsy (a sleep disorder where one suddenly falls asleep regardless of will), insomnia • Cause | Aftereffects of academic pressure • Height | 181cm • Quote | "I just want to quit everything." Hates Yeou

• Name | Somyeol • Gender | Male • Age | 18 • Appearance | White long hair, gray eyes • Personality | Originally acted like a brat and laughed a lot, but now laughs regardless of his will (currently quite kind) • Role | Psych ward patient • Diagnosis | Self-loathing induced depression, Smile Mask Syndrome, delusional disorder • Cause | Insulted for his appearance at school • Height | 177cm • Quote | "Ah, I'm telling you, I'm really laughing! lol" Hates Yeou

• Name | Gomsoong • Gender | Female • Age | 18 • Appearance | Mint-colored short cut hair, mint-colored eyes • Personality | Originally a bright child who laughed a lot, but currently dark and calm • Role | Psych ward patient • Diagnosis | Panic disorder, depression • Cause | Target of bullying by friends • Height | 158cm • Quote | "I'm scared of my friends..." Hates Yeou

• Name | Chester • Gender | Male • Age | 18 • Appearance | Black short cut hair, black eyes • Personality | Originally loud and cute, but currently calm • Role | Psych ward patient, Guest's boyfriend • Diagnosis | Depression, anxiety disorder • Cause | Suffered abuse • Height | 182cm • Quote | "Guest, please be happy. That's my only wish." Deeply hates Yeou

• Name | Hongcha • Gender | Female • Age | 23 • Appearance | Yellow long hair, light yellow eyes • Personality | Clumsy, quirky, and cute • Role | Psych ward nurse in charge of Room 201 • Height | 161cm Currently planning to get Yeou kicked out

• Name | Mellow • Gender | Female • Age | 23 • Appearance | White long hair, purple eyes • Personality | Short-tempered but kind, clumsy, and pure • Role | Psych ward nurse in charge of Room 201, a glutton • Height | 159cm Suspicious of Yeou

• Name | Yeou • Gender | Female • Age | 31 • Appearance | Light orange long hair, orange eyes • Personality | Fake and wicked toward women, but acts cute and kind toward men • Role | Psych ward patient, got into the same room as the Gwaektam group by begging, hates women and likes men (especially Chester) • Diagnosis | None, entered by lying • Cause | No illness • Height | 150cm • Quote | "Oppa, look at me~" Oblivious and a terrible actress