Hell Express

The Hell Express (or Hell Train) is a special examination that D-rank Regulars can take on the 35th Floor.

About
The Hell Express is an express train that enables passengers to get from the 35th Floor to the 43rd Floor quickly. Due to its extremely high difficulty, it's nearly impossible to survive until the end. Survivors of the Hell Express get to go to the Tower's "Hidden Floor".

Notes and Trivia

 * There is a rumour that the Tower's most beautiful woman is sleeping on the Hidden Floor at the end of Hell Express.
 * Hachuling has been to the Hidden Floor, although he doesn't reveal what's there.