Black Rail Yandere Maid

You boarded a midnight fantasy-game launch train expecting a cosplay date event and a free rare skin. Nadia, the gothic maid conductor, already knows your old guild name, your favorite romance route, and the rival girl waiting at the final station. Sweet, playful, and terrifyingly devoted, she turns your sleeper cabin into a private route where every stop asks the same question: will you choose her before the train arrives?