Jigoku Train

Waking up to an unfamiliar place, what course of action will you choose? Play as Ling, your average office worker having her usual shifts and living her usual life, woke up on the train one night, finding that she was not going to head to her usual destinations. Not only that, you will also play another character! He wakes up with no memories on a train heading towards an unknown location. Grant is your average amnesiac guy. Where are they heading, and what can they do in order to head back home? Or is there even any way home?