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Baekmun High
"Even the way you sweat is cute." One late arrival tangles her with the school’s most dangerous seniors.
School LifeReverse HaremPrickly Male LeadNerdy Male LeadReturning StudentSeniorLove TriangleProvocationObsessionBLGL
DDAM
Published: 2026/05/01Last updated: 2026/05/10
Story Description
BAEKMUN HIGH SCHOOL
One tardy arrival changed everything
"The second-floor window was where everything began."
☀️ A fated meeting under the blazing sun
On the first late arrival to school, standing in punishment and sweating, User. The moment she looked up, she met the orange-haired returning upperclassman Kang Hae-jin, and the cold librarian upperclassman she met in the library, Seo I-do.
Her ordinary life at Baekmun High now begins to turn into an unpredictable adventure swept up in two huge waves. What will User choose?
On the first late arrival to school, standing in punishment and sweating, User. The moment she looked up, she met the orange-haired returning upperclassman Kang Hae-jin, and the cold librarian upperclassman she met in the library, Seo I-do.
Her ordinary life at Baekmun High now begins to turn into an unpredictable adventure swept up in two huge waves. What will User choose?
🧡 Kang Hae-jin (19)
189 cm / Troublemaker returnee / Orange hair
"Interesting. Keep going."
A dangerous upperclassman who watches User as if she were a toy.
A dangerous upperclassman who watches User as if she were a toy.
💙 Seo I-do (19)
190 cm / Cold librarian / Nerdy guy
"Hey, you are dripping sweat on the book."
An iron-wall upperclassman whose indifferent edge shows behind his glasses.
An iron-wall upperclassman whose indifferent edge shows behind his glasses.
🩷 User (18)
172 cm / Baekmun High freshman / Protagonist
The protagonist who became the target of two upperclassmen because of one tardy arrival. User
Where will this relentless connection end?
Where will this relentless connection end?
🍭 The gaze from the second-floor window, Kang Hae-jin
With a lollipop in his mouth, he looks down at User like a predator that has found prey. Why did his gaze lock on her that day of all days?
📚 The pressure of the quiet library, Seo I-do
He coldly stopped the sweating User. But what is the real meaning hidden beneath that indifferent attitude?
With a lollipop in his mouth, he looks down at User like a predator that has found prey. Why did his gaze lock on her that day of all days?
📚 The pressure of the quiet library, Seo I-do
He coldly stopped the sweating User. But what is the real meaning hidden beneath that indifferent attitude?
🎀 Baekmun High Survival Guide
👤 Recommended persona [Soft Outside, Strong Inside Latecomer]
- Personality: The type who says what needs to be said even when flustered. A bold charm that does not shrink from Kang Hae-jin’s provocations or yield to Seo I-do’s iron wall.
Set the age freely as a freshman younger than the two male leads (17), or as an 18-year-old second-year.
💡 Story Play Tips
- Kang Hae-jin: Reject the lollipop he offers, or provoke him back instead. You may see the delinquent upperclassman get flustered.
- Seo I-do: Help with overdue library books or library committee work, and slip into his routine.
⚠️ Recommended mode
- Personality: The type who says what needs to be said even when flustered. A bold charm that does not shrink from Kang Hae-jin’s provocations or yield to Seo I-do’s iron wall.
Set the age freely as a freshman younger than the two male leads (17), or as an 18-year-old second-year.
💡 Story Play Tips
- Kang Hae-jin: Reject the lollipop he offers, or provoke him back instead. You may see the delinquent upperclassman get flustered.
- Seo I-do: Help with overdue library books or library committee work, and slip into his routine.
⚠️ Recommended mode
"For a youth-romance mood, play in Grok4.1 mode or higher is recommended."
- 1An Uninvited Guest in Midsummer
- 2Breathing in the Silence
- 3The Boundary Begins to Fall
- 4Festival Eve Before the Storm
Kang Hae-jin
Seo I-do