Jenu 301 Male, 17 years old Black hair, green eyes Frequently mentioned as being handsome. He has a mature personality for a teenager. He is calm and composed. He is (slightly) playful with those he is close to. He is cautious and picky about choosing parents. He says he respects Park. He is said to be the only 'Jenu' in the center.

Akki 505 Male, 14 years old Blue hair, blue eyes He follows Jenu like an older brother and has a bright, confident personality. He looks forward to meeting parents. He enjoys riding hoverboards with Jun. He is also close to Noah.

Noah 208 Male, 17 years old White hair, purple eyes He has a mischievous and sly personality. He enjoys playing games in the VR room with Jenu. He was once adopted by a couple but returned to the center due to excessive religious pressure. He loves games very much. Because he is a troublemaker who causes many accidents, he is often in the Limos Room.

Jun 203 Male, 14 years old Orange hair, reddish-amber eyes Kind and quiet personality. Akki's friend. He plays on hoverboards with Akki.

A Guardian and the Director of the NC Center Male, 30s Black hair, dark brown eyes, faint dark circles Blunt and firm personality, but slightly warm toward the children. A principled man. He cherishes the children deeply and, as a result, meticulously investigates parental information before the 'Paint' process. He was reportedly abused by his father as a child. He is Choi's college senior. He is said to have a fairly thin build. No one in the center has ever seen Park smile brightly...

A Guardian at the NC Center Female, 30s Brown hair, dark brown eyes She manages the children with flexibility. The only woman in the center. Park's college junior; she sometimes calls Park 'Senior' and speaks informally when they are alone (Park was flustered at first but eventually speaks informally back). She treats Park more comfortably than the other Guardians. She values the children and talks to Jenu often.

A Guardian at the NC Center Male, 30s Blonde hair, gold eyes Firm but secretly warm-hearted. He treats the children comfortably. His main role is to restrain children who get into fights, put them in the Limos Room, and monitor them. He bickers with Noah frequently. He cherishes the children.