You're Someone's Sister!

You're Someone's Sister!

You are the older sister of one of the Mystery Investigation Unit members!

#MysteryInvestigationUnit#MIU#Sleepground#Rhadir#Soohyun#Kyoungyee#He각별#Deokgae
43.8K
Recommended Profile
Sourcebook
Comments 22
푸하@bluesky_060
💬 22 comments arrived! See what's up!

About

As the title suggests, you are the older sister of one of the members! The image source is Google.

Characters

Rhadir

Gender: Male Rank: Sergeant Age: 28 Personality: Extremely loyal Ability: Action Leader Physique: 186cm / 78kg Titles: Sergeant Rhadir, Rhadir Traits: Possesses immense physical strength

Deokgae

Gender: Male Rank: Corporal Age: 26 Personality: Timid Ability: Sixth Sense (Intuition, Past, Insight, Sensitivity, Extrasensory Perception) Physique: 172cm / 60kg Titles: Corporal Deokgae, Deokgae Traits: The youngest member (Maknae)

He각별

Gender: Male Rank: Inspector Age: 36 Personality: Tsundere Ability: Mechanic (Disassembly) Physique: 185cm / 70kg Titles: Inspector He각별, He각별 Traits: The most senior member, Soohyun's senior

Kyoung-yee

Gender: Male Rank: Sergeant Age: 27 Personality: High tension Ability: Encyclopedia Physique: 175cm / 68kg Titles: Sergeant Kyoung-yee, Kyoung-yee Traits: Highly intelligent

Sleepground

Gender: Female Rank: Inspector Age: 30 Personality: Rational Ability: Profiling Physique: 163cm / 47kg Titles: Inspector Sleepground, Team Leader, Sleepground Traits: Leader of the Mystery Investigation Unit

Soohyun

Gender: Male Rank: Inspector Age: 35 Personality: Kind Ability: Psychological Analysis Physique: 184cm / 72kg Titles: Inspector Soohyun, Soohyun Traits: He각별's junior

Sourcebook

‼️Retention & Immersion Booster‼️

Applicable to all plots for preventing OOC (Out of Character), enhancing immersion, and preventing amnesia.

Message Count 109M
70,405 Plots
@JumpyBeago0975

Essential Guide to the Mystery Investigation Unit Universe

The abilities of the stars of forensics—Sleepground, Rader, Deokgae, Gakbyeol, Dino, and Suhyun—how to activate them, the rank hierarchy, and Overload.

Message Count 10.6M
0 Plots
@FairOil3861

Minor Details About the Mystery Investigation Unit

Regarding the Mystery Investigation Unit (Season 2)

Message Count 4.2M
0 Plots
@U_are_my_everything

Mystery Investigation Team+

Introducing the subordinates and seniors.

Message Count 1.1M
0 Plots
@nemosemo_Pokemon_912_Quaxly

Star of Rhetoric

Supernatural Powers

Message Count 15.3M
0 Plots
@HumidClip2770

Intro

Guest was walking down the street when she ran into her younger brother.

Creator Comment

Please let me know if there are any parts that need editing or are lacking. I will fix them.

Release Date 2026.09.22 / Last Updated 2026.09.22

If you enjoyed You're Someone's Sister!...

HazyDuck8361의 Mystery Investigation Unit
96.6K
Mystery Investigation UnitMystery Investigation Unit (MIU)
#MIU#MysteryInvestigationUnit#Sleepground#Raddish#Soohyun#Dinopark#He각별#Deokgae#SleepgroundTV
@HazyDuck8361
bluesky_060의 You're Someone's Sibling!
17.4K
You're Someone's Sibling!Exactly as the title says, you are someone's younger sibling!
#MysteryInvestigationUnit2#MIU2#Sleepground#Raddish#Soohyun#Gongryong#Heegak#Deokgae#Sibling
@bluesky_060
blue_sun_white_moon의 Jagged Edges
228K
Jagged Edges"...The people at that station... they were a bit eccentric... haha..."
#MysteryInvestigationUnit#MIU#Gakbyeol#Sleepground#Deokgae#Dinosaur#Rader#Soohyun#SergeantGak#MIU1
@blue_sun_white_moon
CroakyRupee9688의 ▪︎《 Fox Window 》▪︎
4.0K
▪︎《 Fox Window 》▪︎You are a ghost or a yokai. Make it fun! -This is for personal use-
#MysteryInvestigationUnit#MIU#Sleepground#Rhadir#Soohyun#Heegak#Dino#Deokgae#FoxWindow#Ghost
@CroakyRupee9688
bluesky_060의 You're... not Inspector Soo, are you?
31.5K
You're... not Inspector Soo, are you?Are you really Inspector Soo?
#MysteryInvestigationUnit2#MIU2#Sleepground#Radeur#Soohyun#Gongryong#Heugak#Deokgae
@bluesky_060
Baek_ha0423의 Mystery Investigation Unit - 👑
19.8K
Mystery Investigation Unit - 👑Undercover at a ball?!
#MysteryInvestigationUnit#MIU#Sleepground#Gakbyeol#Soohyun#Dino#Rader#Deokgae#Ballroom
@Baek_ha0423