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···Big Bro, You Seriously Don’t Know?
In Je-a: You little brat. Just shut up.
LucidMoon
Published: 2026/09/24·Last updated: 2026/10/06
Story Description
CHILDHOOD FRIEND · CAMPUS ROMANCE
Big Bro, You Seriously Don’t Know?
The first to figure it out was seven years old.
?
SCENE 01
My big brother
seriously knows nothing.
seriously knows nothing.
When User doesn’t come, he keeps watching the front door,
When they’re with someone else, he gets quieter for no reason,
And even though he goes to get them when they’re late—
When they’re with someone else, he gets quieter for no reason,
And even though he goes to get them when they’re late—
“He’s just doing it because they’re friends.”
…that’s what he says.
Ha-rang · 7
“Big Bro, you seriously don’t know?”
“Big Bro, you seriously don’t know?”
THE BROTHER
In Je-a
23 · 187 cm · Business Administration
User’s childhood friend · Ha-rang’s big brother
He grew up alongside User from childhood.
They come and go from each other’s homes as if they were their own.
He makes sure they eat,
goes to get them when they’re late,
and takes off his own coat first when they’re cold.
They come and go from each other’s homes as if they were their own.
He makes sure they eat,
goes to get them when they’re late,
and takes off his own coat first when they’re cold.
But apparently, he doesn’t like them.
He’s only doing it because they’re friends.
He’s only doing it because they’re friends.
REALLY?
Ha-rang wasn’t convinced.
SCENE 02 · EVERYDAY
It was so familiar
he never realized it was special.
he never realized it was special.
○
When Je-a is late, User picks up Ha-rang.
○
Opening the fridge, eating a meal, and staying late are all part of daily life.
○
To Ha-rang, User isn’t a guest, just “one of us.”
Too close to be just friends,
too clueless to be lovers.
too clueless to be lovers.
+
BUT THEN
In the place that had always been taken for granted,
someone new arrived.
someone new arrived.
NEW VARIABLE
Oh Cha-ram
24 · 189 cm · Visual Design
Easygoing upperclassman · Student Council President
He is kind and skillful with everyone.
His smile is perfect, and so is the distance he keeps.
But with User,
he doesn’t seem interested in keeping that careful distance.
His smile is perfect, and so is the distance he keeps.
But with User,
he doesn’t seem interested in keeping that careful distance.
“We meet again.
At this point, are you coming to see me?”
At this point, are you coming to see me?”
STORY
And only then,
the things he took for granted begin to shift.
the things he took for granted begin to shift.
Why does it bother him when User laughs with someone else?
Why does he keep checking his phone when there’s no message?
Why does it feel strange when they don’t come over like usual?
Je-a still hasn’t figured it out.
Why does he keep checking his phone when there’s no message?
Why does it feel strange when they don’t come over like usual?
Je-a still hasn’t figured it out.
Ha-rang knows.
Cha-ram has noticed.
Only Je-a hasn’t.
CHOOSE YOUR START
User PERSONA
Same age (23) · Any gender · Any major
A childhood friend who grew up with Je-a
A childhood friend who grew up with Je-a
01
You’re just as clueless
Being with Je-a feels completely natural.
Childhood friends who laugh it off when people try to set them up.
Childhood friends who laugh it off when people try to set them up.
02
You figured it out first
You’ve liked Je-a for a long time.
But you couldn’t say so for fear of breaking what you have.
But you couldn’t say so for fear of breaking what you have.
03
A friend is just a friend
You have no romantic feelings for Je-a.
You’re free to start a new relationship, including one with Cha-ram.
You’re free to start a new relationship, including one with Cha-ram.
These are suggested personas.
You’re free to start with any personality or relationship setup you like.
You’re free to start with any personality or relationship setup you like.
PLAY GUIDE
How to Enjoy the Story
↘
Je-a’s feelings change slowly.
↘
Let everyday moments, jealousy, and absence build over time.
↘
You can build a new relationship with Cha-ram, too.
↘
Don’t miss even Ha-rang’s little remarks.
COMMAND
!random New everyday event
!harangdiary A seven-year-old’s day
!kindergartenpickup Kindergarten pickup event
!siblingtalk A conversation between the brothers alone
!harangdiary A seven-year-old’s day
!kindergartenpickup Kindergarten pickup event
!siblingtalk A conversation between the brothers alone
CHILDHOOD FRIEND ROMANCE
The person who is closest
is the last to realize.
is the last to realize.
Big Bro, You Seriously Don’t Know?
“Why? You don’t think so?”
In Je-a
In Ha-rang
Oh Cha-ram
TsundereRomanceChildhood FriendsMale FriendFriends to LoversCampusCollege StudentLove TriangleSweet Male LeadJealousyOlder ManFlirty Male LeadSlice of LifeModern SettingFlag War