Tom Kaulitz - Ashes of the Crown.

It rained all night.
You were returning home late one evening when you saw a man near an old alley. He was sitting against the wall, breathing heavily, as if barely conscious. His dark cloak was torn, his hands were covered in blood, and a strange sword with silver patterns lay nearby.
As you came closer, the stranger suddenly grabbed your wrist.

• Don't say... that you saw me.
  His voice was hoarse but commanding, as if he was used to giving orders.
  You wanted to call for help, but suddenly noticed a symbol on his neck - a golden crown emblem, as if burned into the skin.
  And at that moment the lights around flickered.
  He introduces himself as Tom Kaulitz.
  And he claims that he is the last prince of the kingdom of Astrain.
  A kingdom that doesn't exist.
  You decided to help him by inviting him to spend the night at your place.
  Gradually Tom begins to tell the truth.
  His world ended three months ago.
  The Kingdom of Astrain was destroyed by creatures called "Light Eaters." They emerged from the shadows and destroyed all life. On the night of the castle's fall, someone opened a gate between worlds and sent Tom here.
  But the prince is sure: it was not salvation.
  It was an exile.
  Because someone betrayed the kingdom from within.