1 - 20 of 33 Works in Jeong Hae Seong
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In the maze of alleys and the nonstop pulse of Seoul, Haeseong and Sua's love is a quiet defiance - fragile but unwavering, a small flame surviving against the winds of hardship. Their story begin from long ago, in the messy sweetness of youth - a fleeting encounter that grew into something neither could let go. Now, after two years together, they hold tight to fleeting moments, their love standing strong against the weight of responsibility, lingering debt, and unfulfilled dreams.
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Hae Seong goes on an undercover mission at Byeongmun High. Not as a student, but as a teacher.
There, he met Soo Ah, a history teacher. He wants nothing to do with anyone at the school, but it seems that Soo Ah has a feeling for him. Hae Seong rejected Soo Ah because he already has someone deep in his heart. A certain someone that he met only once... a long time ago. Or maybe he solely doesn't recognise her. -
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Purple bruises, white knuckles, and crimson gloves burst into Sua's existence, infusing chaos into a life previously dominated by dusty textbooks and an endless stack of unread novels.
Or Haeseong suddenly becomes the main character in Sua's life, despite all odds.
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Bodies keep record. They care little about deliberation.
Hae-seong grapples with feelings and desires. Set during episode 6.
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The Smoke Behind the Mirror by Kdlove_INSJ
Fandoms: 언더커버 하이스쿨 | Undercover High School (TV)
29 Apr 2025
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A tweak on the scene of episode 9 where Hae-seong realizes that there is a rat inside NIS and the whole mission is staged by Seo Myeong Ju to find the gold. How Su-ah comforts him and later he reveals he knew he is her Bong-ja
Series
- Part 4 of Undercover Revive
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Undercover Hearts by Undercover_Whispers
Fandoms: 언더커버 하이스쿨 | Undercover High School (TV)
27 Apr 2025
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First came the mission, then came the wedding...now it's late night stakeouts, love battles, and endless teasing
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Just Between Us: Behind the Scenes, Beneath the Surface by letseatcookies
Fandoms: 언더커버 하이스쿨 | Undercover High School (TV)
23 Apr 2025
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From secret stares in the classroom to quiet moments after the cameras stop rolling, this collection captures the slow-burning bond between Jeong Haeseong and Oh Sua — and the quiet spark between Seo Kang Joon and Jin Ki Joo. On screen or off, some feelings stay unspoken...but never unnoticed.
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Echoes of a Pinky Promis by Kdlove_INSJ
Fandoms: 언더커버 하이스쿨 | Undercover High School (TV)
21 Apr 2025
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A sweet snippet on when Hae-seong get's to know she is Bong-ja
Series
- Part 3 of Undercover Revive
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Hae Seong who has never been into one gets dragged into an arcade and there approached by a scammer who claims to be an idol scout. He and the others then think up a plan.
Series
- Part 8 of The easy days
- Language:
- English
- Words:
- 1,163
- Chapters:
- 1/1
- Kudos:
- 6
- Hits:
- 79
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Seung Jae wants to get back at Jeong Hae Seong but after taking away his notebooks and reading them, he happens to catch feeling called caring and gets annoyed when the boy suddenly just disappears.
Series
- Part 6 of The easy days
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The students want to come over so Hae Seong has to figure out how to keep his cover intact and them entertained.
Series
- Part 5 of The easy days
- Language:
- English
- Words:
- 1,274
- Chapters:
- 1/1
- Kudos:
- 9
- Hits:
- 123
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better than cigarettes by putribengawan
Fandoms: 언더커버 하이스쿨 | Undercover High School (TV)
15 Apr 2025
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membayangkan ulang scene Sua memergoki Haeseong yang hendak merokok, tapi ceritanya di sini mereka adalah teman sekelas di SMA Byeongmun.
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In which Hae Seong shows Su-A how pretty Oh Bong Ja is.
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Whilst making an escape from the authorities, the aftermath leaves Haeseong badly injured and on the run. With no one else to turn to, he reaches out to Sua, the only person he can trust and she quickly comes to his rescue.
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once when I realised I loved you by thefauxwriter
Fandoms: 언더커버 하이스쿨 | Undercover High School (TV)
07 Apr 2025
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Hae Seong catches feelings and has no clue how to deal with them.
Fixed the story to give myself more Hae Seong and Su A scenes.//Set after Hae Seong learns Su A is Bong Ja and before his big declaration in front of the whole school.//
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After Haeseong’s devastating discovery of his father’s fate, Sua stays by his side through the tough and lonely days that follows. Though unsure how to help, she watches over him with quiet care in hopes to bring him comfort.
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After poor Sua is attacked and injured, a worried Haeseong feels guilty for not being able to protect her and stays by her side throughout the night.
- Language:
- English
- Words:
- 490
- Chapters:
- 1/1
- Kudos:
- 32
- Hits:
- 149
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A scene Hae-seong realizses she Bong-ja and Su-Ah realizes Hae-seong is actually Shi-Hyeon. Her childhood crush.
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The students are dining after the school day when they notice Jeong Hae Seong there and try to get some blackmail material by following him.
It doesn't go like planned.Series
- Part 4 of The easy days
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Ace Agent, Lovestruck Idiot by Kdlove_INSJ
Fandoms: 언더커버 하이스쿨 | Undercover High School (TV)
02 Apr 2025
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In the episode 10 when Hae-seong declares his love infront of class, after that the restaurant scene when his team gets to know about the same. A cute and hilarious way.