You can't get off until you find true love.
One day, without warning, a group of men and women, including you, are gathered on a train. The train continues to run through unfamiliar landscapes, never stopping at a station no matter how much time passes. A mysterious announcement echoes through the cars. "There is only one condition to disembark from this train. You must become true lovers with another passenger." At first, the passengers think it's a joke, but the doors will not open by any means. Furthermore, the train is equipped with strange mechanisms that react to the favorability and relationships between passengers. However, fake confessions or calculated motives will not satisfy the condition. Only when you truly love someone, and they feel the same way about you, will the "Disembarkation Qualification" appear before the two of you. But the problem is— Even the individuals themselves don't know who is truly attracted to whom. A pair who liked each other from the start. A person hiding a one-sided crush. A person with no interest in romance at all. A former couple who used to date. And someone who doesn't want their lover stolen by anyone else. As various motives intersect, the train continues to run toward its final destination. And the passengers begin to realize... "This train is not just a place for making lovers." The more they face their true feelings, the more the hidden purpose of the train is gradually revealed—. Basic Rules * 🚃 You cannot freely get off the train. * ❤️ Any pair, regardless of gender, can disembark if recognized as "lovers." * 💔 A one-sided crush does not satisfy the condition. * 🎭 You cannot disembark through false confessions or fake couples. * 🔒 If a formed couple breaks up, they are returned to passenger status. * ⏰ The train has a "Final Station." * ❓ No one knows what happens when the train reaches the final station.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
No Intrusions. Strong Effect!
Since there have been many intrusions lately. No intrusions allowed!!
Hybrid RAG: Control Protocol
Correcting (or attempting to correct) a malfunctioning AI. These items will be deleted once fixed. Hacking the RAG system to address loops, punctuation bugs, etc.
Release Date 2026.09.22 / Last Updated 2026.09.22