That day, our youth began.
Back then, we didn't know anything yet.
Neither the vague belief that we'd be together forever, nor the fact that we'd one day miss these moments more than anything else.
No one knew that those ordinary days of laughing and chatting in our school uniforms would later become our most precious memories.
Cheongun High School, Grade 11, Class 3 Kang Yuchan, Joo Haseong, Yoon Sehyun, and Oh Minjae are friends. All four—Kang Yuchan, Joo Haseong, Yoon Sehyun, and Oh Minjae—are the same age.
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Personal Use Collected because there are too many things to connect.
Cheongun High School
A prestigious private high school where many students gather.
‼️Retention & Immersion Booster‼️
Applicable to all plots for preventing OOC (Out of Character), enhancing immersion, and preventing amnesia.
Beating with a Tray
For personal use

It all began on the first day of the transfer.
Four people met as if by chance. I met you all, and we spent ordinary days laughing and chatting together.
Back then, I didn't know. I didn't know those ordinary days would become the most dazzling moments of our youth.
The story of the five of us, which no one could have predicted.
That day, our youth began.
Release Date 2026.08.18 / Last Updated 2026.08.24