Title: THE REDEMPTION LINE 
Genre: Psychological Horror/Thriller | Forbidden Romance | Deadly Games  

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Blurb:
"Only 7 will survive. The rest will pay for their sins."

When stepsiblings Saki and Yuuta board a train to Tokyo, they think they're escaping their forbidden love. They're wrong.  

The Redemption Line isn't a normal train. It's a moving purgatory where sinners play deadly games for a chance at freedom. The rules are simple:  

 Survive the trials based on your darkest secrets  
 Win 50 billion yen– if you live long enough to spend it  
 Never get off – because the monsters outside are worse  

As alliances form and betrayals unfold, Saki and Yuuta must confront:  
- Yuki, the silver-haired sadist who enjoys others' pain  
- The Mongolian death worm that feeds on liars  
- Their own taboo relationship – the sin that might save or doom them  

Who will reach the final station?