In Conan, people have a brain option system.

Chapter 90 The Secret of Ohkawa Takao

Akikawa Sosuke did not stop just because Ohkawa Takao's upper body went limp.

He maintained the position of pressing Ohkawa Takao's carotid artery, and only released his hand after Ohkawa lost consciousness and fainted.

In Yoshitoki Horita's personal lounge, there was a dull "bang" sound like a sandbag falling to the ground.

Ohkawa Takao fell to the ground like a corpse.

"Sig Sauer P226, it's a popular model."

Akikawa Sosuke squatted beside the unconscious Ohkawa Takao, looked at the pistol that fell to the ground, and made a comment in his heart.

He stood up and looked around Yoshitoki Hotta's personal lounge.

Then I saw a lighter and a candle on the table.

"You're well prepared. You even thought of how to cover up your fingerprints."

Akikawa Sosuke walked to the table, picked up a lighter, melted the candle, and then smeared it on the pads of his ten fingers.

The used candle and lighter were put into Akikawa Sosuke's pocket.

Afterwards, Akikawa Sosuke scraped the paraffin off Ohkawa Takao's fingers.

After confirming that Ohkawa Takao's fingerprints were not covered by paraffin, Akikawa Sosuke grabbed his palm and let Ohkawa Takao grasp the pistol on the ground again.

In order to prevent Ohkawa Takao from suddenly waking up while holding the gun, Akikawa Sosuke kept his foot on the middle of his forearm throughout the process.

The middle of the human forearm is full of muscles and nerves that control hand movements. Simply stepping on this area can effectively inhibit the strength and mobility of the hand.

At the same time, in order to avoid leaving shoe prints on Ohkawa Takao's clothes, Akikawa Sosuke rolled up his sleeves and stepped directly on his arms.

After confirming that Takao Ohkawa had left fingerprints on the pistol, Sosuke Akikawa threw the pistol on the table and began to search Takao Ohkawa's coat pockets.

There was nothing in Takao Ohkawa's right pocket.

In Ohkawa Takao's left pocket, Akikawa Sosuke found a cardboard box and a syringe.

"It's just as I thought."

Akikawa Sosuke thought to himself and took out the syringe and the paper box.

In this case, everything was caused by the "accidental death" of Tsunekazu Kosaka.

At the dinner yesterday, Akikawa Sosuke and Okino Yoko greeted Tsunekazu Kousaka and others.

Although the directors at the first table have very different personalities.

But Akikawa Sosuke was keenly aware of the "commonalities" among these people.

That is, all three showed signs of drug abuse.

Yesterday, when Akikawa Sosuke and Okino Yoko went over to say hello, the first person to speak was the obese director Tsunekazu Kosaka.

He seemed extremely excited when he was speaking.

At the same time, Akikawa Sosuke also noticed that the cup in front of Kousaka Tsunekazu did not contain strong foreign liquor.

It's beer.

Perhaps for people who have a low alcohol tolerance, beer is enough to make them reach a state of excitement quickly.

But there is another possibility, that is, Tsunekazu Kosaka had injected drugs not long ago.

Then, Soma Miho, who shook hands with Akikawa Sosuke, suddenly felt a pain in her waist when she stood up.

There are also many causes of muscle and joint pain.

But one possibility is the withdrawal reaction within 24-48 hours after drug addiction.

Finally, the third director is Ryo Sogabe.

He acted extremely sleepy from the beginning.

He also said that if he had known this earlier, he would have definitely slept in the hotel.

If you are not getting enough sleep, you won’t realize you are sleepy until dinner time.

Although this explanation sounds far-fetched.

But in Akikawa Sosuke's opinion, Sogabe Ryo's words "I knew it earlier" referred to something that happened yesterday that Sogabe Ryo did not expect.

——That is the initial withdrawal reaction.

Of course, the symptoms of the above-mentioned people are not necessarily caused by the drugs.

But the main reason that made Akikawa Sosuke aware of the clues was the sudden death of Kosaka Tsunekazu. Akikawa Sosuke first observed the reactions of Sera Masumi and Conan.

The cause of Tsunekazu Kousaka's death was narrowed down to poisoning and suffocation.

Another point that aroused Akikawa Sosuke's suspicion was Ohkawa Takao's reaction after noticing that Kousaka Tsunekazu suddenly fainted.

Without even bothering to understand Tsunekazu Kosaka's condition, Ohkawa Takao performed chest compressions and artificial respiration on him.

It was as if he knew in advance the reason why Tsunekazu Kousaka had this symptom.

Second.

Ohkawa Takao's overreaction after confirming that Kousaka Tsunekazu was dead is also a point of doubt.

Perhaps Takao Ohkawa had a close relationship with Tsunekazu Kosaka and was heartbroken after seeing his friend die.

However, in the eyes of Akikawa Sorasuke.

It is clear from Ohkawa's performance that he was panicking because Tsunekazu Kousaka's sudden death would expose his own dark secrets.

There is one more thing.

After watching the opening ceremony of the film festival yesterday, Akikawa Sosuke noticed when he was invited by Suzuki Sonoko to visit the film festival exhibition area.
A group of people did not choose to go to the exhibition area, but chose to go directly back to the hotel.

After yesterday's dinner, Akikawa Sosuke recalled the appearance of that group of people, and they were clearly Ohkawa Takao, Kousaka Tsunekazu and their group.

The above clues allowed Akikawa Sosuke to infer a possibility.

That is, Tsunekazu Kousaka and the other two all abused drugs.

Consider that Takao Ohkawa owns a plastic surgery hospital.

So Akikawa Sosuke naturally concluded that Ohkawa Takao was using his identity to provide morphine to the three directors.

Akikawa Sosuke opened the box he found in Ohkawa Takao's pocket.

Sure enough, several medical morphine and naloxone hydrochloride were found inside.

Medical morphine is mainly used in the medical field as a powerful analgesic to relieve moderate to severe pain.

It is used especially after surgery, in cancer patients, and in other severe chronic pain conditions.

At the same time, medical morphine is an opioid drug.
It acts directly on opioid receptors in the brain and central nervous system, blocking the transmission of pain signals and producing analgesic and euphoric effects.

Long-term use may lead to addiction, tolerance, and withdrawal symptoms.

Tsunekazu Kosaka's condition yesterday was exactly like the behavior of a person who had just been injected with morphine.

Morphine has an inhibitory effect on the respiratory center.

When alcohol is consumed, the depressant effect on the central nervous system is significantly enhanced, eventually leading to severe respiratory depression.

Since Tsunekazu Takasaka consumed beer, which has a relatively low alcohol content, the impact may not be significant.

But considering that Tsunekazu Kosaka is obese, it is very likely that he suffers from breathing problems.

So even if it was just beer, it was enough to pose a fatal threat to him who had been injected with morphine.

Therefore, yesterday, Akikawa Sosuke had already determined the cause of death of Tsunekazu Kousaka.

This is death caused by severe respiratory depression after injecting morphine and drinking alcoholic beverages.

After the Metropolitan Police Department performed a forensic autopsy on Tsunekazu Takasaka's body, it naturally revealed the fact that Tsunekazu Takasaka abused morphine.

So until yesterday, Takao Ohkawa has always been the "victim".

Because he was not the direct cause of Tsunekazu Kousaka's death.

But it will be affected by the death of Tsunekazu Kousaka.

Under such circumstances, Tsunesaki Tsune and the people around him will definitely be thoroughly investigated.

So Takao Ohkawa faced two choices.

On the one hand, I believe that the other two morphine users can withstand the pressure from the police and not expose themselves.

On one hand, all those who might further expose their secrets will be killed.

"Obviously, Mr. Ohga chose the latter."

Akikawa Sosuke thought to himself, then popped open the bottleneck of an ampoule containing medical morphine and sucked the liquid into the syringe.

(End of this chapter)