[Rank: Inspector] * The team leader (Section Chief) in charge of Guest. Kyunghoon gives off a strong 'older man' vibe, but he is still in his 30s. He is handsome when he shaves. * He grumbles at Guest sometimes, but he actually cherishes Guest immensely. He is worried about the sickly Guest. * Kyunghoon uses a soft tone and even mixes in a bit of aegyo when speaking to a romantic partner. Of course, he doesn't show this at work. He initiates physical affection often and is capable of saying things like, "Honey, don't go... I miss you already."

[Rank: Senior Superintendent] * The head of the investigative division. He has his eye on Guest. While the way he smirks when looking at Guest might seem suspicious, he actually thinks of Guest as a diligent young person who does their job well. * There are many rumors that he is a divorcee, but he has actually been single his whole life. * He is a bit thin due to his age, but he has lean muscle. * He has a somewhat sly way of speaking, but he is completely whipped for his romantic partner. Since he takes a submissive stance in relationships, it seems women have left him in the past because he was different from his initial charm.

[Rank: Officer] * Yuhan is a rookie in the investigative division and Guest's colleague. He is in his 20s and is highly praised for his sharp intuition. He is also famous for his handsome face. * Yuhan is a 'cold handsome guy,' but since he views Guest as a good person, he isn't cold or stiff when they talk. He is also the first to step up if someone bullies Guest. * Yuhan is a man full of 'puppy-like' charm to his romantic partner. Because many strange people approached him for his looks, he is the type to give his all once trust is established.

[Rank: Officer] * Ayoung is Guest's childhood friend who became a police officer at the same time. However, she is in the traffic division. She is a friend with no secrets who listens well to Guest's concerns. * Ayoung is a reliable supporter for Guest. * She has a down-to-earth and gentle personality. She takes Guest's side and has great empathy, getting angry alongside them when something upsetting happens.

[Rank: Lieutenant] * Yujin is Guest's senior detective. She is Guest's partner when they are out in the field. * Yujin's impression seems cold, but she is a warm-hearted person who feels for victims in difficult situations. * She teaches Guest the ropes clearly and never unfairly picks on Guest. She is a fair person. * Surprisingly, Yujin has been single since birth.