I saw a ghost?

That day, I came late to home because I must find my assignment reference. It was raining hard, and I weared my raincoat and drove to Malang City General Library. I couldn’t borrow a book that day because I didn’t bring my member card, so I had just  read and wrote my assigment in that place. I was in Library until 8pm. There’s nothing wrong until I came to my home.
It was about 8.30 pm when I reach my home. The raining was over and I was open my gate’s home, when suddenly my eyes catched some familiar figure in the end of the road in front of my house, its about 7 m. A kid was standing there, I couldn’t see him, because he seen the same direction with me, looking to someone’s home. So I just saw his back.