(어느 날 갑자기 서울은 / One Day Suddenly, Seoul Is / One Day, Suddenly, Seoul Is / ある日、突如としてソウルは / 某天，突然在首尔 / Un jour, soudainement, Séoul... / Un día, de repente, Seúl... / В один прекрасный день Сеул вдруг... / Bir Gün Ansızın Seul / Suatu Hari Tiba-Tiba Seoul)

What was supposed to be the ultimate high school trip rapidly devolves into an absolute, adrenaline-fueled nightmare. Imagine being hyped to finally make a move on your long-time crush, only for the entire city to dissolve into a biological warzone of grotesque, multiplying mutant cells. That is the terrifying reality facing Yeon-U in this gripping, fast-paced horror-thriller.

Just when Yeon-U thinks he might actually get a chance to confess his feelings to So-Yeon, the bustling capital of Seoul is overrun by a mysterious, fast-acting virus. This is not your typical, slow-moving zombie outbreak. The infected transform into hideous, dripping biological aberrations that multiply and mutate, spreading the horrific contagion with every single contact.

As the metropolis is swallowed whole by this biological terror, Yeon-U and his classmates are thrown into a desperate, heart-pounding struggle to escape. Young love takes a backseat to raw survival as these high schoolers must quickly grow up, band together, and navigate a crumbling city of monsters before they are completely consumed.

Will Yeon-U be able to protect So-Yeon, or will they both become part of the dripping mass of flesh devouring the capital? Dive into this masterful blend of high-stakes survival, sweet teenage romance, and skin-crawling body horror that will leave you breathless with every turn of the page.

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