Heiji is already awake and when he went to the dining room,breakfast is ready. Aoko noticed him.

"Oh,you're already awake! You're breakfast is ready",Aoko said.

Heiji just sat in the chair and eat his breakfast. After eating,he prepared for the next code. Before leaving,he said.

"Can I stay here for another night just the case I solve this one?",he asked.

"Of course.",Aoko accepted the request.

Heiji left the house and thought,"I'm almost done! I'm ready to meet him!".

Heiji has been running around Beika City. The code he has been solving is harder than the rest.

"Am I searching or just running around? It's harder than the ones I deciphered earlier.",he thought.

"I live in the 3 districts. What does that mean?",he thought.

While solving the code,he met a brown-haired girl and asked how many districts does Beika City have.

"I don't know. To be exact,I only know 5 districts.",she answered.

"Ah,thanks! By the way,what's your name? I have seen you before.",Heiji asked.

"I'm your friend,Sonoko Suzuki. Nice to see you again,Hattori-kun.",she answered.

"Do you know something about the mystery in the city?",he asked.

"No,but my friend knows about it. Oh! I have to go somewhere! See you later!",she said.

"Hey! If you're finished at your schedule,will you please go to your friend and ask him about it?!",Heiji requested.

"It's 'her'! My friend is a girl!",Sonoko confirmed.

"Sorry!",he said as he went to the opposite direction.

It's 4:00 and Heiji couldn't decipher the code. However,something came into his mind when he remembered what Aoko said when she was guiding him.

~Flashback~

"Because in the 3rd District,there is a house that is believed to be cursed."

~End Flashback~

"Wait a minute! If I remove 's' in districts,that makes district. And if I add 'rd' beside 3,that makes 3rd. Third District. How come didn't I notice that!",he deducted.

It was already nighttime and Heiji is back at Aoko's house.

"Well,have you decipher the code?",she asked.

"Yeah.",he answered.

When Heiji was done eating his dinner,he get back to the bedroom he borrowed.

Unknown to him,every friend of Sonoko knew who he was.

"Ran,he's here.",Sonoko whispered to her friend.

"I know. By the way,did you tell him about everything we know?",she asked.

"No. I didn't.",Sonoko answered,revealing she hide the fact that she know something about the mystery.

Why didn't she tell Heiji about this?