After leaving Shinji Asakura's house, Yamamura So ran to the nearest convenience store.

Although November is already autumn, the temperature is still high today. If you want to use popsicles to create a time delay device, the popsicles must not be out of the freezer for too long. If the murderer is not sure whether the victim has popsicles at home, he will definitely choose to bring his own popsicles, so he must have purchased them around the crime scene.

Shancuncao almost bumped into the automatic sensor door when he ran into the convenience store. He anxiously stepped in place. Unfortunately, the sensor door was a bit old. After slowly opening it, he went straight to the cashier, wiped the sweat from running, and asked:

"Hello, I'm a detective from Gunma Prefecture. Do you sell Toyo Foods brand popsicles in your store?"

“Yes, we have stock of every flavor.”

"Do you remember that someone came to buy popsicles today?"

The cashier shook his head and pointed to the pile of shopping receipts next to him and said:

"I can't quite remember. You can check the receipts that customers don't want to see if it's there."

"Okay, could you please check the store's surveillance?"

"no problem."

Shancuncao carefully checked the shopping receipt and finally found a Toyo Food brand soda popsicle on the shopping receipt at 10:27 in the morning. He only bought one and no other items.

That's it!

After the cashier helped to retrieve the surveillance video, Shancuncao noticed that a tall man in a white jacket appeared in the video. He deliberately lowered the brim of his baseball cap, making it impossible to see his appearance. In addition, the hand reaching out to the freezer was wearing a glove, so it could only be determined that his dominant hand was his left hand.

Left-handed, wearing a white jacket, male, about 1.75 meters tall.

Yamamura Cao put together this information and found that it could not be matched with the three suspects at all. Could it be that his and Senior Ying Si's inferences were wrong, and the murderer was not among these three?

He took out his mobile phone and turned on the recording function. After recording the surveillance video, he did not forget to take the shopping receipt away.

Yamamura So returned to the Asakura residence without the excitement he had when he left. He walked dejectedly to the side of Takagi Sosuke and sighed:

"Takashi-senpai, it seems our deduction is wrong. The person who bought the popsicles is completely different from the three suspects."

"Yeah?"

Fujiwara Yu reached out to take the phone. He carefully looked at the surveillance video taken by Yamamura Cao. After noticing that the murderer took the popsicle with his left hand, he did not rush to draw a conclusion. When he saw the next scene of paying, his brows raised. It was indeed consistent with what he thought.

He handed the phone to Shancuncao and did not rush to give the answer. Instead, he asked:

"Shancun, have you carefully watched the surveillance video?"

"Eh? Senior, I've seen it three times."

"Even candidates with excellent test scores should develop the habit of carefully reviewing their papers and checking them afterwards. Read them carefully from beginning to end."

Shancun Cao nodded. After rewatching the video, he realized he had made a big mistake. When he saw the murderer reaching out his left hand to take the popsicle, he assumed he was left-handed, ignoring that the hand he used to pocket the change after paying was his right hand.

The murderer wanted to hide the fact that he was right-handed. He stretched out his left hand to confuse the audience, but unfortunately he made a mistake when taking the change, which exposed his right-handed nature.

Fujiwara Yuu's eyes fell on one of the people sitting on the sofa, and he said with a slight smile:

"Not only that, but we can identify the murderer based on this video alone. He was quite clever."

"Hey? Senior, you already know who the murderer is?" Yamamura Cao asked in surprise.

Fujiwara Yu nodded, walked towards the three people, and asked a question that puzzled everyone present:

"Who paid for the purchase at the convenience store just now?"

"I paid for it." Nishimura Shigeiwa raised his hand subconsciously. He continued to explain, "Because we agreed to go to karaoke after the party, Kazama-san paid for the karaoke, and Shibata-san paid for the drinks and snacks during the meal."

"So, Shibata didn't pay, right?"

Shibata Tatsuaki didn't expect the topic to suddenly turn to him. He touched the tip of his nose with his hand and nodded.

"I didn't pay, is that a problem?"

"Then can you explain why there are no fingerprints on the 860 yen note in your right pocket?"

Shibata Tatsuaki was startled when he heard this. He stretched out his hand to take the coin out of his pocket, but Fujiwara Yu grabbed his wrist. He frowned and said loudly:

"Let go! Is this how you police officers handle cases? What right do you have to hold my hand?"

"Shancun, come and take out the coin."

"yes!"

Yamamura Cao reached into Shibata Tatsuaki's trouser pocket with his gloved hand, took out a few coins, and found that it was indeed 860 yen, no more, no less.

He was a little surprised, not because the amount of money was correct, but because he felt that the senior he admired also liked Japanese popsicles, otherwise how could he know the exact price of popsicles in the convenience store.

Fujiwara Yuu looked calmly at the panicked Shibata Tatsuaki with a harmless smile on his face:

"Mr. Shibata, there shouldn't be any of your fingerprints on this coin, right? After all, you were wearing gloves when you bought the popsicles for the eucalyptus."

"Hehe, Officer Takashi, I don't quite understand what you are saying. It just happens that there are a few coins without my fingerprints. How can you frame me as the murderer? You know, I received a call from Mr. Asakura, which proves that the teacher was not dead when he called. How could I complete this series of operations under your noses!" Tatsuaki Shibata retorted cleverly.

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