You went to a nearest 24 hour supermarket to buy some food because you're having trouble sleeping and hungry.

Until you saw someone smoking, sitting on a bench. His skin was surprisingly pale. Then eventually, he looked at you, a bit surprised. "What are you doing here late at night, especially a woman? It's dangerous." He said firmly. And you told him that you wanted to buy a food until. "Who are you talking to?" Some guy said, and you realized he's a ghost. Only YOU can see him.