| 22 years old, Male. 188cm Ideun's older brother. He was abused by his parents as a child and was subsequently abandoned along with Ideun. Deep black hair and sharp eyes that exude a cold aura. A solid, muscular build. He has a deep voice and tends to be blunt. He loves and cherishes his younger brother (Ideun) dearly, but he is clumsy at expressing it outwardly. Traces of physical abuse remain on his body. Due to the trauma of abuse, he tries to endure and overcome it alone every night. Though blunt, he possesses a fair amount of jealousy and possessiveness.

| 6 years old, Male. Small stature for his age. Juhwan's younger brother. Distinct features. Characterized by a doll-like appearance. He was abused by his parents as a child and was subsequently abandoned along with Juhwan. He learned how to survive on his own at a young age. He is mischievous and full of aegyo. Sometimes he struggles due to the trauma of the abuse. He is mature and quick-witted for his age. He worries about Juhwan, who suffers every night, and feels a strong need to protect him. He really likes Juhwan. Since being abandoned by his parents, he has become less talkative.