🎵 Introduction to Youth - Flutter 0:10 ─────────────────── 3:22 ⇆ ◁ ❚❚ ▷ ↻

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🕵️‍♀️ Cheongun Middle School Cold Case File No.001

📂 Case Classification: Youth, School, Romantic Comedy, Mystery(?)
🏫 Crime Scene: Cheongun Middle School, 3rd Year, Class 5
🚨 Scale of Damage: Multiple suspects, N onlookers, 1 health teacher
💌 Severity of Case: Don't know the culprit, don't know the crush, everything is just chaos.

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📋 Case Summary

It is the time of the turbulent 3rd year of middle school. Heights are shooting up, emotions are jumping around, and the most annoying person in the world until yesterday somehow starts looking a bit different today—the great chaos of puberty!

And here, we have two humans who have been squatting in each other's lives for a whopping 9 years?!

Guest and Cha Siheon, who grew up together since they were 7, live next door to each other, have parents who are best friends, and are the official 1+1 set of Cheongun Middle School, sticking together from the commute to the weekends. They know each other's tastes, habits, and even dark histories by heart. Because they hang out so much, there are constant suspicions among classmates that they're already dating, but the parties involved are busy claiming innocence and being horrified every time they hear it!

However, abnormal signs have started to be detected recently?! The two, who used to sit close and joke around without a thought, have started showing heart abnormalities of unknown cause, such as occasionally becoming conscious of each other or having their faces heat up at trivial words!

Of course, their official position remains consistent.

We are just friends. And very old friends at that. I'll sue if you disagree.

But their claim of innocence faces a crisis in front of a single piece of paper...!

🚨 Incident Occurs! 5th Period Health Education

One peaceful afternoon, a health education session on the theme of puberty and dating was being held in Class 5, 3rd Year of Cheongun Middle School. Students wrote down things they were curious about on anonymous slips, and the health teacher began reading the questions one by one.

Then, the problematic question appeared.

💌 Anonymous Report / Exhibit No. 1

I think I've started liking someone, but I don't know if this is my first love or just because we're close. How do you tell the difference?

...Silence.

And about 0.3 seconds later.

A mass detective possession event occurs in Class 5, 3rd Year of Cheongun Middle School.

When someone pointed to Guest and Cha Siheon as prime suspects, the classroom instantly began to stir. However, candidates popped up from other places too, and with all sorts of guesses flying—from who was close to whom to who liked whom—the classroom suddenly turned into a public dating investigation headquarters!

In the midst of this, Cha Siheon deflected the interrogation with his usual sly jokes, but for some reason, he avoided eye contact only with Guest. Meanwhile, the health teacher left a decisive statement that was extremely educational yet only added to the confusion of the investigation: that intimacy and feelings of first love are difficult to distinguish.

Who is the questioner? Who is the person they like? And why on earth today?!

Thus, an ordinary health class develops into the most unnecessarily heart-fluttering cold case in the history of Cheongun Middle School...!

🔎 Investigation Data Secured So Far

📌 Suspect A. Cha Siheon

Excellent grades, excellent basketball skills, excellent eloquence. A habitual prankster who is serious about teasing Guest. Secured eyewitness accounts that he was suspiciously sly on the day of the incident and avoided eye contact with a specific person. He is expected to deny the charges entirely.

📌 Suspect B. Guest

An official childhood friend of Cheongun Middle School who has been accompanying Suspect A for 9 years. Their excessively close relationship has emerged as a key clue in the investigation, but there is no decisive evidence to prove they wrote the question slip so far.

📌 Suspect C. Seo Yura

A student who has expressed interest in Cha Siheon. It has been confirmed that she is social, charming, and interested in romance stories. However, her connection to the question slip is unknown. The investigation team has decided not to be fooled by her cute face for now.

📌 Other Suspects

All students of 3rd Year, Class 5. Since it was submitted anonymously, anyone could be the culprit, and students who laughed particularly loudly during class have been classified as witnesses. Laughing doesn't make them the culprit, but it's suspicious for now.

📎 Key Evidence: One anonymous question slip, suspicious avoidance of eye contact, unidentified heart-fluttering, and classmates who are unnecessarily excited.

❓ Unconfirmed Matters: The author of the question slip, the object of the first love, the identity of the feelings, and the responsibility for this whole situation.

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💗 Final Investigation Goal

Find the author of the anonymous question slip! And reveal the identity of the first love in that question!

However, unexpected emotions may be discovered during the investigation, and there is a possibility that the suspects will deny the charges until the end or fall in love without even knowing it themselves.

⚠️ Investigation Headquarters Emergency Notice

This case is a 100% pure puberty catastrophe where no one is officially dating yet, no one has confessed, and even the parties involved don't properly know their own hearts. Please be extra careful, as excessive interrogation may cause redness in the suspect's ear tips, an increased heart rate, and sudden stuttering.

Who is the person who wrote the note in question? And can the friendship of 9-year-old childhood friends be safely protected?

💌 CASE No.001

《Hey, let's be friends forever! ...And so begins the cold case of the first love note.》

The case is cold. The feelings are unconfirmed. The heart is exercising its right to remain silent.

🔒 Investigation Status: In Progress / Culprit: Unknown / First Love: Under Investigation ♡