Heiji has been lonely in 4 months.He has been missing his friend,but he couldn't remember his face nor where he lived. What he only remember about him is that he fought against a organization. But he keeps thinking about him,what he looks like and his intelligence. He is sure that they meet again.

One day,while reading one of Ellery Queen's books,someone knocked at the door. Shizuka Hattori rushed to open the door. When she opened it,she saw a mailman.

"Is this the Hattori residence?",the mailman asked.

"Yes,it is.",Shizuka answered.

"I'm looking for Heiji Hattori. Is he here?",the mailman asked again.

"Yes,but he's on his room.",Shizuka answered.

"Can you give this to him?",he requested as he give a letter to Shizuka.

"Yes,I'll give it.",She accepted.

The mailman left later on. So Shizuka closed the door,then she rushed to Heiji's room.

"Heiji,a letter for you.",She said as she showed her son the letter.

"Give it to me and I'll see what's inside.",Heiji replied as Shizuka handed the letter to him.

While opening the letter,Heiji thought,"Maybe this is only a prank.".

As soon as Heiji got the contents,he was shocked that there are 2 papers. While reading the first one,he thought,"Maybe it's a fangirl only.".

But as soon as he read the second one,he was shocked it's actually a code. A code referring to the sender's location.

"What is the meaning of this",he thought.

To be continued.......