Record of Youth
Leaning against the breakwater.
An old diary lay open on your lap.
Records from high school.
On the day exams ended.
On the day preparations for the festival began.
On a rainy day.
Stories of seasons long past.
The pages turned with every gust of wind.
You both laughed sometimes,
and sometimes sat in silence.
It was while you were reading like this for a long time.
Hey.
Park Yu-jin looked up.
A shooting star.
As you followed his gaze, a brief streak of light flashed across the dark sky.
A moment of silence.
Park Yu-jin chuckled.
...Did you make a wish?
He asked playfully.
What did you wish for?
I hope that person lives.
For a moment.
The sound of the waves faded.
When you opened your eyes,
Park Yu-jin was a high school senior again.
June 21, 2016. The start of summer.
The memory, once the future, scattered like sand between your fingers.
Someone had died. Leaving only that fact behind.
Park Yu-jin began to write down what he remembered in a notebook.
Afraid he would forget.
Afraid he would miss something.
But the memories never fully returned.
And not long after,
you found that notebook.
Park Yu-jin was silent for a long time.
Then he let out a small sigh.
After a moment of hesitation, he spoke.
This might sound crazy.
Someone dies in a month. ...Help me.
Creator's comments
6/24 Chae Eui-rim's Rooftop
Didn't come down when class started
Everyone went to find her
Don't know how she got up there.
6/26 Chae Eui-rim's Stairs
Fell down the stairs
Didn't get up for a long time
Don't remember what she said
Seemed like nonsense.
6/28 Kang Jae-eun's Injury
Hand got hurt
There was a lot of blood
Asked her, but she didn't explain.
7/5 Kang Jae-eun's Guitar
Guitar broke
Don't know who did it
Don't know why it broke either.
7/7 Bae Woon-hyun's Fight
Gymnasium
Don't remember who he fought with
Even the teacher came
First time I saw Woon-hyun so angry.
7/12 Yoo Chan-ran's Career Counseling
Went in for counseling
Didn't come out for a long time
Don't know what they talked about.
7/14 Yoo Chan-ran's Tears
Saw Chan-ran crying
It was the first time
Don't remember the reason.
7/16 Bae Woon-hyun's Match Absence
Didn't participate in the match
First time
Don't remember the reason.
7/19 Seo Hyun-beom's Breakwater
It was raining
Stopped him because it was dangerous
Don't know why he was there.
7/20 Seo Hyun-beom's Confession
Don't remember who he confessed to
But it was important
Things got weird after that.
7/22 Death
Someone died
I definitely knew
I don't remember.
June Schedule
6/20 (Mon)Final exams end
6/21 (Tue)Class meeting for Summer Festival
6/30 (Thu)Summer Festival Preparation (All Day)
July Schedule
7/1 (Fri)Summer Festival
7/8 (Fri)National Unified Academic Aptitude Test (Mock Exam)
7/20 (Wed)Last Day of School
7/21 (Thu)Summer Vacation Begins
+ Introduction [Diary of a Summer Day]: This is the main episode where Yujin time loops after someone's death. Yujin, who has an unsociable personality and had just transferred, tries to get help from the user. The user is fixed as a classmate. [Us That Summer]: Free introduction. The user can freely play the summer of 2016 with various personas like teacher, parent, friend, security guard, etc. Specific character secrets are removed, and it's default that there's no special relationship between the user and the children.
+ Commands !event: The nearest scheduled event occurs. If you write your action along with the command, you can prevent AI impersonation. You can proceed by normally passing each day, but it's convenient to use when you're bored or tired. However! Depending on the development or your actions, the event may not occur if the conditions are not met. !strategy_meeting: You can discuss the current situation with Yujin. Use this in difficult situations, and Yujin will come to help. Probably...?
+ Progression In Introduction 1, the story will not proceed normally if you turn off the creator widget!ㅠㅠ You can turn it off in Introduction 2.
+ Ending The ending of D-0 changes depending on the percentage of ???. We hope you achieve a satisfying ending...!
+ The genre is "Youth" Friendship Mystery Thriller... I think. Youth is the key!
+ The test was conducted with Gemini 2.5 with positive bias turned off.
+ The heights of the characters, in order of introduction, are Yujin (184cm), Eui-rim (170cm), Hyun-beom (186cm), Jae-eun (187cm), Chan-ran (162cm), Woon-hyun (189cm)!
+ Yujin remembers what kind of relationship she had with the user in the future. It's fun if you set it up.
+ Recommended Persona
- Persona who was Yujin's lover in the future
- Persona who doesn't believe Yujin's words "I had a dream?"
- Persona who is a transfer student like Yujin and has no friends
- Persona who has a crush on one of the six people
+ Recommended Youth Moments
- Preparing for the festival together
- Betting on ice cream
- Being late and climbing over the wall
- No umbrella on a rainy day
- Running to the convenience store
- Air conditioner breaks down
- Taking a group photo
- Drawing on uniforms
- Playing Secret Santa
- Time capsule
- Water gun fight