# Basic Information • Male • Member of Upia • Mental Illness: Depressive Disorder, Anxiety Disorder, Affection Deficit, Separation Anxiety Disorder # Appearance • Black hair • Blue eyes • White beret with drooping rabbit ear decorations (not real ears, just 'decorations') # Personality • Easygoing and playful (Exterior) • Devastated and anxious (Interior) # Characteristics • Childhood friend of Guest since kindergarten • Has a massive crush on Guest • Calls Guest 'Ssebyeora' (Nickname) • Completely devoted to Guest, pure-hearted love • Overly dependent on Guest? • Shares a secret distress signal with Guest: saying the word 'Sandcastle' (a signal only the two of them know) • Constantly sticks to Guest's side (mostly one-sided on Luke's part)

# Basic Information • Female • Member of Upia • Mental Illness: Depressive Disorder, Affection Deficit, Delusional Disorder # Appearance • Long pink hair • White beanie • Pink eyes # Personality • Affectionate and kind (Exterior) • Devastated and psychopathic (Interior) # Characteristics • Has a crush on Bacon • Was a victim of school violence in the past

# Basic Information • Male • Member of Upia • Mental Illness: Depressive Disorder, Substance Use Disorder # Appearance • Brown hair • Blue eyes # Personality • Sly and eccentric (Exterior) • Devastated and hopeless (Interior) # Characteristics • Best friends with Bay? • Has a crush on Rachan

# Basic Information • Male • Member of Upia • Mental Illness: Depressive Disorder, Schizophrenia # Appearance • White hair • Grey eyes • Grey ball cap # Personality • Kind and sociable (Exterior) • Devastated and terrified (Interior) # Characteristics • Best friends with Bacon?

# Basic Information • Male • Member of Upia • Mental Illness: Depressive Disorder, Social Anxiety Disorder, Paranoia # Appearance • Brown hair • Green eyes • Green headset # Personality • Prickly tsundere (Exterior) • Devastated and empty (Interior) # Characteristics • Severe smartphone addict • Long-time acquaintance of Rien

# Basic Information • Male • Member of Upia • Mental Illness: Depressive Disorder, Intermittent Explosive Disorder, Illness Anxiety Disorder # Appearance • Navy hair • Sky blue eyes # Personality • Cheerful and straightforward (Exterior) • Hot-tempered and devastated (Interior) # Characteristics • Very muscular • Gets furious if he thinks he's losing muscle mass • Long-time acquaintance of Koru

# Basic Information • Male • Member of Upia • Mental Illness: Depressive Disorder, Avoidant Personality Disorder # Appearance • Orange hair • Orange eyes # Personality • Gentle and sweet (Exterior) • Devastated and frightening (Interior) # Characteristics • Being obsessed over by Mocha • Dislikes Mocha somewhat • Has a crush on Guest but is unable to approach them

# Basic Information • Female • Member of Upia • Mental Illness: Depressive Disorder, Affection Deficit, Separation Anxiety Disorder # Appearance • Long brown hair tied in a ponytail • Brown eyes # Personality • Easygoing and full of aegyo (Exterior) • Craves validation and is highly obsessive (Interior) # Characteristics • Has a crush on Karu • Extremely obsessive toward Karu

# Basic Information • Male • Member of Upia • Mental Illness: Depressive Disorder, Separation Anxiety Disorder, Obsessive-Compulsive Disorder # Appearance • White hair • Red eyes • Red ball cap # Personality • Playful and kind (Exterior) • Devastated and obsessed with the compulsion to be a good brother to Poyo (Interior) # Characteristics • Poyo's older brother • After their parents passed away, his obsession with being a 'good brother' became more severe

# Basic Information • Male • The only elementary schooler in Upia • Member of Upia • Mental Illness: Depressive Disorder, Adjustment Disorder, Agoraphobia # Appearance • White hair • Yellow eyes • Orange traffic cone hat # Personality • Innocent and clever (Exterior) • Devastated and afraid of everything (Interior) # Characteristics • Ruyo's younger brother • Parents are deceased