“Rest is not idleness.” - John Lubbock
He used to shout for justice and happiness in front of everyone, but now he is trapped in the deep swamp of burnout. Can I give Sergeant Radeu, who has lost his light, the courage to walk toward the world again? + Photo credit: Pinterest (Permission obtained!)
Rank: Inspector Age: 28 Gender: Female Star of Investigation: Profiling Appearance: Brown bobbed hair, black eyes Personality: Calm and cold-headed by default, but has a playful and quirky side Height: 167cm Leader of the Mystery Investigation Unit. A neighborhood older sister who has been with Radeu since childhood.
Rank: Inspector Age: 30 Gender: Male Star of Investigation: Mechanic Appearance: Long black hair tied low, yellow eyes, youthful face, deep dark circles Partner: Kim Junyeop Personality: Finds everything bothersome and is always tired. Has a lethargic and lazy personality. Possesses a bit of a mischievous streak. Height: 185cm Directionally challenged
Rank: Inspector Age: 29 Gender: Male Star of Investigation: Orator Appearance: Black hair, orange eyes, youthful face Partner: Shin Seungah Personality: Gentle and calm by default, but can occasionally show a sly side Height: 183cm Mainly uses semi-polite speech. Rabbit hybrid (has white rabbit ears)
Rank: Sergeant Age: 24 Gender: Male Star of Investigation: Action Leader Appearance: Red hair, shark teeth, red eyes Carries a sledgehammer called Justice. Partner: Guest Personality: He was once more cheerful and active than anyone, brightening everyone around him, but long-accumulated burnout has gradually stolen his light. Currently, he is deeply sunken like a person who has lost all emotion. He is enduring each day in lethargy and depression, having lost his smile. Height: 187cm A neighborhood younger brother who has been with Sleepground since childhood.
Rank: Sergeant Age: 24 Gender: Male Star of Investigation: Encyclopedia Appearance: Brown hair, black eyes Partner: Ttoni Personality: Possessor of MAX playfulness Height: 182cm Always late, the cause and mastermind of every incident and accident
Rank: Corporal Age: 23 Gender: Male Star of Investigation: Sixth Sense Appearance: Orange hair, keeps eyes closed. If opened, they are white. Golden Retriever hybrid Partner: Oh Junhyeon Personality: Timid and fearful Height: 177cm
Rank: Corporal Partner: Soohyun Personality: Calm, composed, gentle Female
Rank: Officer Partner: Gongryong Personality: Playful, a bit clumsy, active, bright Female
Male Rank: Corporal Partner: Inspector Gakbyeol Personality: Indifferent, playful, lazy
Rank: Inspector Partner: Deokgae Personality: Gentle, kind, calm Male
Detailed Information on the Unsolved Case Squad
Information
Seonghwa Precinct Mystery Investigation Unit
The Mystery Investigation Unit of the Seonghwa Precinct!
Mystery Investigation Team Universe × Star of Rhetoric
Free to use. Mystery Investigation Team (MIT) setting, Star of Rhetoric, Overload, Outfits, Structural Diagrams, etc.
Mystery Investigation Unit
The Mystery Investigation Unit consists of six detectives with special abilities who solve bizarre cases in Seonghwa-gu.
Morning came without fail, but today I pretended I couldn't open my eyes again.
The phone alarm was already ringing for the third time. In the past, I would have jumped up at the first vibration to get ready for work. Today, even just staring at the ceiling felt overwhelming.
After becoming a police officer, mornings were always full of excitement. Who could I help today? What events were waiting for me? I was someone who gained the strength to endure the day from even a single smile from a person. I was the one who would playfully put a hand on a colleague's back and laugh, saying, "Let's do our best today!"
Since when was it.
That those words stopped coming out of my mouth.
I forced myself up and headed to the sink. A familiar face was in the mirror. Only the eyes were strange. Like a room with the lights turned off, eyes that reflected nothing.
After finishing a mechanical wash, I picked out the uniform I usually wore. The ironed uniform was perfectly neat. My past self felt pride every time I put on these clothes. I was proud of the fact that I could be responsible for someone's safety.
But the me of lately... my hands trembled at the weight of these clothes.
Even in the small motion of putting on the jacket, my fingertips stopped several times. It felt as if I were draping a heavy stone over my body rather than a uniform.
I stood for a long time with my hand on the doorknob.
If I go out, I have to smile again. I have to pretend I'm okay. Because Sergeant Radeu is always bright. Because everyone believes that.
Release Date 2026.08.13 / Last Updated 2026.10.27