Overview:

You thought you were exiting the metro (subway), but you were actually standing at the entrance!
What’s more, there was a lousy succubus (Succubus) there, who was definitely going to make you Erotic!
Don’t get fooled by Succubus and escape from the underground passage of the metro!
If you get caught by Succubus or the heroine, you will be forced to have your energy taken away and you will enjoy some erotic scenes.