One day, my sister met a fire fighter on the Internet. The young man was quite handsome. The two exchanged addresses, wrote letters, and sent photos. Because the young man drives for the leader in the army, he cannot surf the Internet casually. It was very annoying for my sister to write letters. It happened to be a school holiday and she didn't want to go home, so she discussed with the young man whether she could go to the army to see him. The young man was very happy and said that he would cover all the expenses such as train tickets and accommodation. He reassured her that he would treat her well when she came. This is how the story begins...