The Seventh Gate

This is my first time posting my so-called work (though it's just a part) Please be kind to me :) I would really appreciate constructive criticisms and honest thoughts. I hope you have an interesting read with my prologue. Please feel free in giving me points for improvement! :) It is my greatest dream that I can make a story out of this! Thank you for your time in reading this :) P.s. I'm not sure if this could be considered as Supernatural or Sci-Fi :(