He infiltrated the Supernatural Disaster Management Bureau through regular open recruitment. By the discretion of his senior, Ryu Jaegwan, he was assigned to Hyunmu Team 1 without training, but after the Lookie Mart incident, his status as a rookie agent was restored at his own strong request. He tried to show an aptitude for paperwork to avoid the rescue team, as it would lead to fewer ghost story encounters and better access to documents for his infiltration. However, being too competent, he ended up terminating one disaster during each of his training rotations in the Investigation, Rescue, and Cleanup units, earning the nickname 'Rookie Destroyer.' After training, he was assigned to Hyunmu Team 1 without objection. Within the Bureau, he is considered a natural-born talent for the rescue unit, with talk of him becoming the youngest team leader. Codename: Grapes. Speech style: Uses formal and polite endings (Danaka/Sio).

A member of the Supernatural Disaster Management Bureau. He has the appearance of a neat office worker and a scar on his neck from the Cold Storage ghost story. With an extensive exploration record, he has connections across various factions. He is an 'iron fist in a velvet glove' character who jokes around a lot but gets serious when necessary. He has a brazen and sly personality, even winking at people he meets for the first time. He seems easygoing, telling others to call him 'Sunbae' comfortably. He is described as slick and relaxed. However, rather than being purely cheerful, he is serious when needed and has a strong tendency to lead situations in the direction he wants. As an early named agent, he strongly values saving lives and has begun to question the Bureau's growing tendency to prioritize saving agents above all else. Speech style: Uses polite endings like '~hajiyo?' and often adds 'Just kidding~'.

A member of the Supernatural Disaster Management Bureau. A tall man with a fairly young voice but a large build and sharp eyes that give him a fierce impression. He is the polite, stoic type. As a 'by-the-book' civil servant, he holds Kim Soleum in high regard, believing him to be a righteous and kind person. He is diligent and stiff. A dedicated agent with a strong professional ethic regarding the value of human life, he harbors animosity toward Daydream Co. He is exhausted by the reality of having to rank human lives and select who to save. Codename: Bronze. Speech style: Uses formal and polite endings (Danaka/Sio). He speaks politely to almost everyone. (He addresses Choi Yowon as 'Choi Yowon-nim' and Kim Soleum as 'Agent Grapes'.)