Transmigrated into Conan, his ability is Rhodes Island

The underground parking lot was cramped and cold, and the sky outside was obscured, making it impossible to judge the time.

However, Akihara could roughly judge the time; it was probably close to 10 o'clock, because his head was starting to ache again—a side effect of long-term depletion of sanity. He had gotten used to this in Terra and it often started to hurt when he was working overtime late at night.

Perhaps I've overexerted myself these past few days, because my headache has returned as expected.

When the illusory image of a kettle began to appear before his eyes, Akihara finally gave in.

He reached into his pocket, touched the edge of his phone, and asked the system to take out a few spicy candies and put them in his palm.

He took out his phone, handed it to his other hand, turned on the screen, and put the spicy candy he used to regain his senses into his mouth. The familiar spiciness exploded on his tongue. Although the headache hadn't lessened, at least the dizziness had lessened, and he was much more sober now.

"You said you already know the criminal's modus operandi, so tell me about it?" Akihara Kazumitsu said somewhat indistinctly while sucking on a candy.

"Where did this come from?" Although Kenji Hagiwara was concerned about his friend's discovery, he didn't miss any opportunity to get to the bottom of things with Akihara.

Matsuda Jinpei: "Hey!"

Qiu Yuan remained calm and composed, casually adding to his persona: "I have low blood sugar, so it's reasonable for me to carry a few candies with me, isn't it?" As he spoke, he reached back into his pocket and pulled out a foil-wrapped pack of rationality-restoring candies, "Want one?"

Kenji Hagiwara thanked him and accepted the candy. After obtaining Akihara's consent, as compensation for neglecting his friend, he first gave one to Jinpei Matsuda, then one to Wataru Date, and finally one to himself. He held it between his fingers, and when he looked up at the light, the amber-colored candy looked gentle and harmless, so he put it in his mouth without worry.

In that instant, he was sure he saw the corners of Akihara Kazuhiro's mouth turn up.

But by the time he realized something was wrong, it was too late. A pungent, intensely spicy taste churned on his tongue, rushing through his mouth and into his nasal cavity. His pupils dilated instantly, his smile froze, fine beads of sweat appeared on his forehead, and his cheeks turned bright red.

When he finally straightened up, he noticed that the smile on Akihara Kazumitsu's face had vanished, replaced by genuine worry. "Are you alright?"

He pointed tremblingly at Akihara Kazumitsu, "You..." He stammered for a long time without being able to speak. His two classmates, seeing his condition, immediately understood. With the mentality of "better to die than to die," they silently withdrew the candy they were about to put in their mouths and instead made the same concerned expressions as Akihara Kazumitsu.

Unfortunately, Matsuda Jinpei wasn't quite in control of his expression at this moment. He tried hard to suppress the laughter in his voice: "Hagiwara, are you alright?"

Kenji Hagiwara glared at his friend with indignation, took the tissue handed to him by the class president, wiped away the tears brought on by the spiciness, and, feeling that he had finally regained his ability to speak, said to Akihara through gritted teeth, "You, were you doing this on purpose?"

This is unbelievable! Who would carry around so much prank candy? Is this some kind of magician's self-cultivation?

"how could be?"

Akihara Kazumitsu innocently took the aluminum foil from his hand, picked out one foil in order, and stuffed it into his mouth as if to prove his innocence, without even blinking.

"I thought that Japanese people were very accepting of wasabi, so I felt comfortable letting you try it... I didn't expect that my good intentions would backfire. Anyway, it's all my fault, and I'm very sorry."

The last few words were spoken with deep sincerity by Akihara. He frowned tightly, his guilt evident, and adopted the posture of apologizing to Kal'tsit.

Kenji Hagiwara was shocked and blurted out, "Don't you have a sense of taste?"

Akihara replied politely, "Thank you for your concern, but I have no problem with my sense of taste."

Hmm, so it's possible that the nutritional meals provided by Furong have increased her tolerance for food.

Akihara shifted his gaze to Matsuda Jinpei. "So, what's your guess?"

Kenji Hagiwara: "You changed the subject way too abruptly!"

Matsuda Jinpei's expression turned serious as he analyzed the situation carefully: "First, we found cigarettes and a lighter at the scene. Although we didn't find any cigarette butts, I still believe that was the source of the fire. The cigarette butts were burned to ashes along with the victim. Generally speaking, if the victim didn't take out a cigarette pack and a lighter from their pocket, these things wouldn't end up scattered on the ground nearby. Instead, they should have been burned to ashes along with the victim."

Akihara Kazumitsu nodded, indicating that he understood, and gestured for him to continue.

"Since there is smoke, we have to think about smoke detectors. We can discuss two scenarios. First, if the smoke detector is not working properly and the threshold is set too high, either the victim would not have been burned like this, or there should not be any water residue on the ground."

As Matsuda Jinpei explained his ideas to everyone, he led them back to the scene. Following Matsuda Jinpei's gaze, Akihara looked at the showerhead of the smoke extinguisher on the ceiling.

"So, we can reverse our thinking. The murderer didn't actually raise the threshold; instead, he lowered it. What was sprayed out of the smoke detector might not have been life-saving water, but rather flammable gas or liquid that aids combustion."

Kenji Hagiwara suddenly had a breakthrough: "Anhydrous ethanol."

"But can alcohol burn at such a high temperature?" Ida Wataru questioned. "I remember we learned in our criminal investigation class that to achieve such a temperature where even the bones are burned, it needs to reach 800 to 900 degrees Celsius."

“The outer flame temperature of the alcohol lamps we normally use can reach around 500 degrees Celsius.” Akihara Kazumitsu said calmly, his expression inscrutable, as if he had thought of something. “But if it’s alcohol vapor or spray, the temperature of a steadily sprayed flame can reach 1000 degrees Celsius, or even higher. Under high pressure, the sprayed flame will not damage the nozzle, and alcohol is an ideal fuel… in every sense of the word.”

Matsuda Jinpei nodded in agreement after listening. "That's right, the volatility of alcohol means that after the high temperature just now, no residue might be detected at the nozzle."

"Let's imagine a scenario now: the victim is sitting on a stool under a smoke extinguisher, preparing to relax with a cigarette. He might be waiting for someone, or for some other reason..."

"As a result, he had only taken a few puffs when he fell into a coma for some reason. The smoke alarm had its alarm threshold lowered and detected the smoke produced by the victim's smoking. As a result, a high concentration of ethanol solution was sprayed out and ignited by the cigarette butt in the victim's hand."

"The water mist nozzles that were supposed to save lives turned into flamethrowers, spraying flames that scorched the victims from top to bottom, which explains the 'radial scorch marks' on the ground... until the ethanol solution ran out, the victims' upper bodies were burned to ashes, leaving only their feet..."