Conan: I've been linked to the tech tree system.

Takagi flipped through the notebook, “The only time they went to the toilet around that time was when the two of them went together, and they returned to the room 3 minutes later, around 7:58, so they didn’t have time to commit the crime.”

"Okay, thank you for your hard work, Takagi-kun."

Inspector Megure turned his head, his gaze toward Iwama and Arai growing increasingly sharp.

Both of them were sweating profusely.

"Hey, listen carefully, we have alibis!"

Professor Iwama visibly became restless.

As a police officer, ignoring a suspect's performance is a required course; Inspector Megure ignored the shouting Iwama.

"Brother Tono, can we identify the culprit now?"

Tohru Tono glanced at his watch and felt that it was about time, so he got up from the chair where he had been resting.

“Of course.” He smiled confidently. “The murderer is—”

He deliberately dragged out his voice, his right index finger twitching between the rock and Arai's fingertips.

All eyes were focused on that slender index finger, as if it could determine life and death.

"You are the murderer, Mr. Iwama."

The index finger finally stopped, and Arai patted his chest and breathed a long sigh of relief, while Iwama's face turned extremely ugly.

"You're making baseless accusations!" he exclaimed angrily. "You have no evidence, so what makes you think I'm the murderer?"

Tohru Tohno ignored him. Having been a detective in the Conan world for so long, he had also become a bit fond of rambling. "Actually, we could have determined that the culprit was Mr. Iwama long ago by using the process of elimination—after all, with Mr. Arai's large physique, it would be difficult for him to commit a crime by hiding in a large ship."

Arai is over 1.9 meters tall, much taller than Toru Tono, making him stand out among the average height of the Japanese people.

Moreover, with his large physique, it would be a pipe dream to force his way into the food transport ship without help; even with help, he would likely get stuck inside the large ship and unable to get out.

“I didn’t say so before because, as he said, I didn’t have enough evidence.” Toru Tohno saw Shiho Miyano walking back out of the corner of his eye, and a smile appeared on his lips. “Now I do.”

"..." Iwama finally quieted down, his eyes fixed on Tono Toru, who was talking eloquently.

“Brother Tono, you’ve already explained the method of the crime, and everyone knows it. But the question is, how did you determine that Mr. Iwama’s alibi was fake?” Inspector Megure played the role of a loyal straight man.

“Mr. Iwama, why don’t you hear my speculation first?” Toru Tono smiled at Iwama.

“You first told Mr. Kaneda that you had important matters to discuss with him in another room, which is why you arranged room number eight in advance.”

"Miss Anzai, you can ask your colleagues. They might have records of Mr. Iwama booking a suite."

"Ah, yes." Anxi was still a little confused and hurriedly went to the front desk to call and confirm.

"Then, after all the food you ordered was delivered, you deliberately asked Mr. Arai to buy cigarettes, and you even specified that the restaurant was out of stock, so that he could buy them at the convenience store, thus giving yourself some time alone."

"Wait, wait, wait! I was in room number 3 when the incident happened, and Mr. Mori can attest to that, can't he?" Iwama anxiously pushed his way through the crowd to retort, then pointed at Kogoro Mori.

"Ah, that's true..." Kogoro Mouri was also starting to lose confidence.

The main issue is that Tohru Tohno's deductions have never been wrong, but he himself definitely heard Iwama's voice...

"You have a tape recorder on you, right?"

Tono asked.

“Uh, yes, there is, but it’s a small recorder that I carried with me to record meetings.” Iwama’s smooth words faltered. “But even if the sound really came from the recorder, the paper door couldn’t have closed by itself, could it? Mr. Mori heard the sound!”

"Haiyuan."

Tohru Tono didn't answer immediately, but instead called out to Shiho Miyano, who was standing behind him.

Shiho Miyano walked over and handed him a soaking wet paper bag and a small thumbtack.

Upon seeing these two items, Iwama's pupils contracted sharply.

"Look familiar?"

Tohru Tono took the paper bag and said to him with a smile, "Didn't you expect us to find this?"

He stood silently with his head bowed.

"Wait, Tono, what does this prove?" Inspector Megure was completely baffled.

"Nail thumbtacks onto the door frame of the paper door, then tighten it with a rubber band. On the other side of the paper door, use a paper bag made of bamboo chopsticks to form a loop to secure the other end."

"Then pull the paper door in front of the paper bag and fix it in place. Take the ice cubes from the dishes on the table and put them in the middle of the paper bag. This will turn it into a simple door closing mechanism."

Tohru Tono gestured with the prop in his hand a few times, "In this way, when the ice melts, the paper bag becomes wet and its tensile strength decreases, causing it to break. The rubber band will then forcefully close the paper door, producing the sound that Mr. Mori heard."

Inspector Megure and Takagi were dumbfounded; they had never imagined such a fancy and elaborate method of committing a crime.

"That's it."

Chapter 145 So confident

Hearing this, Iwama broke out in a cold sweat and couldn't hold back any longer: "Wait, wait, wait!"

He waved his arms in the air, acting somewhat hysterically, "Even if your fancy tricks are real, what evidence do you have to prove I did it!"

Seeing that he was about to lose control, Inspector Megure quickly signaled Takagi and the officers around him to quietly move forward, forming a subtle encirclement.

Their police aren't good at solving cases, but they're experts at catching these kinds of criminals!

"Did you know that even if you mute an old-fashioned tape recorder, with current technology you can still recover the recording by scanning the residual magnetic field with a magnetic resonance imaging device?"

"When we hear your pre-recorded voice, won't everything become clear?"

"thump"

Toru Tono's additional words became the last straw that broke the camel's back, and Professor Iwama lost his strength and knelt on the ground.

"It's all Jintian's fault for finding out that I had previously published students' papers under my name. He threatened me, saying that if I didn't want the matter to be exposed, I had to recommend him for promotion to associate professor during the election process. He even went so far as to extort 5 million yen from me..."

Tohno nodded repeatedly as he listened.

The reasons for this crime are quite reasonable; they're much more normal than things like being hit in the face with a clothes hanger, disagreeing with fanfiction, or having an asymmetrical building.

Iwama was taken away by the police, having successfully completed his mission and earned 200 points.

Tohno was about to return to his room, completely satisfied, when Conan came over and tugged at his sleeve: "Was what you just said true?"

What is real?

"It's that thing about magnetic resonance imaging equipment scanning residual magnetic fields." Conan had been struggling with this question.

There's a feeling that Toru Tono is talking nonsense... or has technology really developed to that level without him noticing?

"How could it be true? I was just teasing him." With the help of the system, there might be other ways to remove the recording that was canceled, but it's definitely not a method he made up on the spot.

Residual magnetic field... that kind of thing is obviously a scam to fool laymen.

"I knew it." Conan rolled his dead fish eyes. "No matter what, mentioning the recording after the sound was canceled is just too illogical..."

"That's not all. In fact, even the evidence we obtained was fake." Shiho Miyano, who had been standing quietly to the side, suddenly interjected in her disguised, somewhat seductive voice.

"Hey, don't expose me like that."

"What?!" Conan exclaimed in surprise. "Could it be that the paper bag and nail you got...?"

"Ah, don't tell anyone—that was indeed the new one that I had Haibara get in advance," Toru Tono whispered to Conan. "The real evidence has probably already gone down the artificial stream into the sewers. Even if the water is recycled, it will still take a lot of effort to find it."

Conan was truly speechless: "So all the evidence was fake? You're something else."

"Isn't this already considered inducement?"

"You're being really rude. Didn't you also have situations where your own evidence chain was insufficient and you had to rely on suspects to fill in the gaps?"

"That was just a small, reasonable trick! Who else would use fake evidence like you... Wait a minute." Conan suddenly remembered something, "Since you didn't even find the paper bag and the nail, how did you determine his method of committing the crime?"

"Guess."

"A guess? What if the reasoning is wrong?"

"I can't be wrong."

"So confident?" Conan was shocked.

“Extremely confident,” Toru Tono replied.

......

The dinner party ended fairly well, and Toru Tono remained immersed in his work for the next few days.

The company is operating quite well, and it opened in a rather low-key manner.

There's not much to worry about in terms of publicity and promotion. Misaki Ichijo has a lot of connections and resources, which is enough to maintain the public business needs.

"Boss, this is this week's financial statement... Also, the custom order I mentioned to you before needs to be processed. The finished product needs to be delivered for testing within this month."

Misaki Ichijo walked into the "Star Hub" company office in the Beika Building.

"Okay, thank you."

Tohru Tono relaxed in his executive chair and glanced at the report she handed him.

After the business had been operating for a short time, he gradually got used to the company's business model and it gradually got on the right track.

Since he had little management experience, he basically gave all the executive power to Misaki Ichijo, while he himself was only responsible for some major matters and financial decisions.

Of course, he also has the important task of custom inventions, so he rarely has time to relax.

Setting down the financial statements in his hand, Toru Tono's fingertips tapped out a crisp rhythm on the solid wood desk. Outside the floor-to-ceiling windows, the traffic in Ginza meandered into ribbons of light in the twilight, casting his profile in shifting shadows.

One of the custom orders Misaki mentioned was indeed tricky—a political figure's private art museum needed a complete intelligent security system, requiring real-time gravity sensing and vibration monitoring during the transportation of the collection.

How about using a nanoscale piezoelectric ceramic sensor array?

Tohru Tohru waved for Misaki Ichijo, who no longer harbored any hostility towards him, to leave, and then pondered a solution.

Three sets of intersecting sensors were implanted inside the transport container, which can trigger an alarm even if the collection is tilted by more than 5 degrees...

Tohru Tono suddenly had an idea and almost knocked over the celadon teacup on the table when he turned around.

"But during transport, it has to withstand the humid sea breezes of Tokyo Bay." He pulled out a pen and drew molecular structures on a sticky note: "Traditional packaging materials will..."

Using graphene composite films to create sandwich structures...

The nib of the fountain pen leaves a dot of ink on the paper.

Tohru Tono was immersed in his own world.