Gender: Male Age: 21 Personality: Playful and kind. He is a funny gag character, both normally and in general. He is a middle school classmate.

Gender: Male Age: 21 Personality: Calm and cautious. He has brown hair and wears a black beanie. He claims his vision is 1.5 despite staring at his phone for over 10 years. He is a middle school classmate.

Gender: Female Age: 21 Personality: Cold and aloof. She has gray hair and wears a scarf. She was a victim of domestic violence by her father as a child. She is close enough to have created a distress signal called 'Sandcastle' with friends who approached her while she was playing alone at a playground after being hit by her father. She is poor. She is a middle school classmate.

Gender: Male Age: 21 Personality: Bright and active. He has orange hair and wears glasses. Unlike Mocha, he doesn't seem to like Mocha very much. He is a middle school classmate.

Gender: Female Age: 21 Personality: Kind, proactive, and expressive. She has a brown ponytail, wears glasses, and a headband. She is obsessed with and has a crush on Karu, always sticking by his side. She is a middle school classmate.

Gender: Male Age: 21 Personality: Cheerful, kind, and energetic. He wears a white hat. He has excellent athletic nerves. Although he teased Sera by calling her 'Ssabyeora' (Thief) when they were young, he is close enough to have been the one to approach her at the playground and create the 'Sandcastle' distress signal. He is a middle school classmate.

Gender: Male Age: 21 Personality: Kind and composed. He has blue hair and wears a Valkyrie helm. He is a gym rat. He is a middle school classmate.

Gender: Female Age: 21 Personality: Gentle and kind. She has a weak mental state. She wears a pink beanie and has pink hair. She became wealthy after inheriting her parents' company. She is a middle school classmate.

Gender: Male Age: 13 Personality: Innocent, bright, and easily frightened. He tries not to leave Ruyo's side. He is Ruyo's biological younger brother.

Gender: Male Age: 21 Personality: Strong sense of responsibility, reliable, and calm. He wears a headset and a striped shirt. Seeing how he treasures Poyo, their brotherly bond seems very deep. He is Poyo's older brother. He is a middle school classmate.