Chapter 481

"Sōsetsu, have you confirmed this is a homicide?" Ikeda Erena at the door was very agitated.

The tall beauty's greatest pleasure in life is two things: first, watching Uesugi Sōsetsu solve cases, and second, being intimate with Uesugi Sōsetsu. Upon hearing that Uesugi Sōsetsu was absolutely certain it was a homicide, she immediately became interested.

I can also personally witness Uesugi Sōsetsu solving a case!

Moreover, this case sounds quite complicated! What idol group, how disgusting! Internally, they've sunk to this degree! Members engaging in pillow business, directing disgusting fans to attack rivals, and finally both dying!

The just Ikeda Erena has long wanted to strike back fiercely.

Yamaguchi looks so pitiful!

However, Ishihara Mikoto's expression was even more solemn. The forensic beauty, when on field duty, normally wears a very plain indigo forensic field outfit with sneakers and a white coat, and because she needs to touch corpses, she also wears a mask. Hearing Uesugi Sōsetsu say this, she couldn't help but say: "Uesugi, acetylcholine amber, are you serious?"

Uesugi Sōsetsu glanced at Ishihara Mikoto and nodded: "I am serious."

The forensic beauty's complexion visibly worsened, and the two professionals at the scene both saw solemnity in each other's eyes.

Here I need to explain what acetylcholine amber is.

The full name of acetylcholine amber is acetylcholine acetate, a type of skeletal muscle relaxant, odorless, salty in taste. It can bind to the N2 acetylcholine receptor of skeletal muscle,

producing a depolarized state, causing skeletal muscle relaxation, mainly used during general anesthesia surgery for tracheal intubation, fracture reduction, and muscle spasms caused by tetanus and other acute diseases, allowing surgery to proceed confidently after injection.

However, this substance is not only used clinically; it is also a drug used in many executions by injection, taking effect extremely fast—intravenous injection leads to death within one minute without much pain, and is used by many countries for executions.

Because it inherently carries considerable danger, it is often associated with criminal crimes such as "kidnapping" and "murder."

Moreover, acetylcholine amber, once entering the human body, rapidly hydrolyzes and metabolizes with pseudocholinesterase in the blood, so routine checks cannot detect it, making this drug absolutely contraband.

If Ikeda's manager died from this drug, then it can only mean that the person who injected him must have a certain background and capability; otherwise, ordinary people could hardly obtain acetylcholine amber, let alone say that Uesugi Sōsetsu, an assistant professor at the University of Tokyo Medical School, would find it difficult to obtain acetylcholine amber from within the University of Tokyo and take it out.

If this is truly the case, then things are serious.

"Is the Special Investigation Headquarters being formed?" Uesugi Sōsetsu asked in a deep voice.

"Yes, Superintendent Higurashi has just left the Metropolitan Police Department and is expected to need until this afternoon to formally establish the temporary Special Investigation Headquarters, with all nearby police forces fully assembled by tomorrow morning." Assistant Kai Toru nodded beside him: "What should we do? Uesugi Chief, should we continue searching, or go to Tokyo University first?"

"Searching, we've already finished searching." Uesugi Sōsetsu said with a slightly relaxed expression: "I've already investigated the matter thoroughly."

"Ikeda Hiroshi died from injection of acetylcholine amber, while the two other idols died from fentanyl derivatives."

"This is not some accidental incident, nor is it sudden death from drug use at a silver party."

"This is a murder! A multiple murder, and behind it definitely involves some concealed methods in an advanced murder." Uesugi Sōsetsu said coldly, gesturing for all members of the Special Mission Unit to come forward, then directly lifting the corpse bag.

Hey!

Others are fine, but Nanxiang Yui, the Assistant Police Inspector who came to the scene for the first time, turned green in the face. He hurriedly clasped his hands together, mentally chanting "Amitabha Buddha," thinking: "Give me some preparation time too!"

I'm still seeing a corpse for the first time!

And you're doing this—it's too impolite, isn't it? Wouldn't the wandering souls of Ikeda and the two other idols have objections?

However, Uesugi Sōsetsu didn't care; he had long been immune to corpses.

What's this? For any corpse that would trigger the Death Soul Contract, I ask them if they agree to the autopsy, and they always agree.

Mr. Ikeda agreed!

"The evidence is right here!" Uesugi Sōsetsu first opened Ikeda Hiroshi's corpse bag, used his hand to lift his toenail, pointing at a spot: "Do you see the puncture mark here?"

Everyone in the Special Mission Unit shook their heads.

"Well, maybe a magnifying glass and multispectral imager are needed to confirm, but I can confirm the injection puncture is hidden behind the toenail! Right here!" Uesugi Sōsetsu thought relying on the naked eye to discern was indeed a bit strained, so he just smiled: "Send it to Tokyo University for confirmation with a multispectral imager."

"As for Nakai and Eiyuan, it's the same." Uesugi Sōsetsu walked over to the two idols, parted their hair, pointing at a spot: "As for their injection puncture, it's here."

"" completely indistinguishable." Kai Toru and Date Nagamune leaned in to look for a long time, but also couldn't see any difference between this spot and normal hair roots.

Uesugi Chief, still as always, defying heaven.

And Ikeda Erena and Ishihara Mikoto have long been used to it.

"So, we're now sending the corpses to Tokyo University." Uesugi Sōsetsu said softly: "Their equipment will give us a correct answer."

As for Nanxiang Yui, he's already numb.

Is this okay?

Are your eyes made by Canon?

But even more numb is yet to come.

In the afternoon, the Special Mission Unit sent the three corpses to Tokyo University for examination, and indeed, everything was exactly as Uesugi Sōsetsu had judged, identical!

Through multispectral imaging and scanning, confirmed that Ikeda Hiroshi's injection puncture was hidden behind the toenail, and confirmed that the two idols' injection punctures were located within the hair roots of their long hair on the head.

At the same time, through LC-MS analysis designated by Uesugi Sōsetsu, confirmed that Ikeda Hiroshi's corpse contained weak metabolites of acetylcholine amber, while the fentanyl residues on the two idols were also successfully detected.

Nanxiang Yui was numb, completely numb!

Uesugi Chief's case-solving method is simply unheard of, unseen, and completely shattered his training in case-solving at Police University.

What is this?

Normal police investigation is investigation—collecting evidence—analyzing results—speculating the criminal process—drawing conclusions.

Uesugi Sōsetsu's investigation process is investigation—drawing conclusion one—speculating the criminal process—analyzing results—collecting evidence.

If anyone else did this, Nanxiang Yui would scold them for having a pure pure brain problem.

But.

Uesugi can just say it right!

Normally, routine checks already include dozens of toxic substances, and expanding to more precise analytical instruments in toxicology involves thousands of types; even if acetylcholine amber is indeed present, analyzing it from scratch, one type at a time, would take at least a week or even longer.

But Uesugi Sōsetsu first judged death by acetylcholine amber, then let precision instruments analyze, and results came out in one or two hours.

Still TMD really!

Similarly, conducting full-body multispectral imaging scanning analysis on corpses also requires a lot of time and lengthy layer-by-layer and spectral analysis,

carefully distinguishing different.

But Uesugi Sōsetsu doesn't need to at all; he directly told the Tokyo University researchers to just scan the three points he pointed to.

Still TMD is here!

After spectral analysis, the injection puncture sites were exactly the three locations identified by Uesugi Muneyuki, and they popped right out.

No, man, are your eyes made of Gundam nim titanium alloy? 4K ultra-high definition? You can even see that clearly?

Nango Yui stared wide-eyed, yet still couldn't make out where those three puncture sites actually were.

Moreover, similar to the vacuum at the hair roots of a female idol's long hair and inside the toenail cover of an agent, how did Uesugi even discover it?

Nango Yui truly couldn't figure it out no matter how hard she thought.

Could it be that the deceased himself told him?

Finally, while waiting for the test results, Nango Yui couldn't help but say: "Uesugi-san, may I ask you a question?"

"Speak." Uesugi Muneyuki nodded lightly.

"How on earth did you determine that Imazaki's agent died from succinylcholine poisoning?" Nango Yui had sweat on his forehead, feeling his worldview shatter to pieces.

"Oh, it was based on my experience." Uesugi Muneyuki replied calmly.

"Experience? But what about the evidence?"

"The evidence is that LC-MS analysis detected trace metabolites of succinylcholine." Uesugi Muneyuki widened his clear, pure eyes, looking as if to say, "See, the evidence is right here, isn't it?"

"No, I mean the basis of your judgment—how exactly did you determine it was succinylcholine injection?"

"Naturally, based on my experience."

"Your experience? I'm not doubting you, Uesugi-san, but where does your experience in judging succinylcholine injection deaths come from?"

"Naturally from finding trace metabolites of succinylcholine in the LC-MS analysis." Uesugi Muneyuki pointed to the test results on the screen and documents: "Plus the puncture sites—isn't that the strongest proof of death by injection?"

Nango Yui: "........"

The Special Mission Unit newcomer racked his brains for ages but still couldn't find any flaw.

Father, I've seen an immortal, Nango Yui couldn't help thinking, while beside him, Kai and others had long grown used to it, and Date even came over to pat Nango Yui's shoulder: "I once believed in science."

"Me too." Nango Yui nodded deeply, deeply in agreement.

Subsequently, this Special Mission Unit newcomer, an elite from Kyoto University's Career Track, felt a vast, brand-new heaven and earth unfold before him.

To work alongside such a heaven-defying existence is our honor and blessing!

No wonder Father pulled every string to get me in here!

Special Mission Unit, great things await!

Just as Uesugi Muneyuki and others were preliminarily obtaining results at Tokyo University.

Metropolitan Police Department, interrogation room—Kashiwagi Jin was still pressing Yamaguchi Maho.

Until a female officer knocked on the room door, she wore a form-fitting Metropolitan Police Department female officer desk duty uniform skirt, her figure slender and alluring, beneath her flawless silk-like beautiful legs, her feet stepped on standard five-centimeter lacquered high-heeled shoes, a head of slightly brownish black hair tied into a ponytail hanging down her back,

her face like an iceberg—cold, striking, and composed, faintly carrying a hint of married woman's charm and dignity.

"Misa? What are you doing here? This is the Criminal Investigation Department!" Kashiwagi Jin discovered his wife appearing here, couldn't help but ask in surprise.

Even Yamaguchi, who could no longer cry, weakly lifted her head.

What a stunning, aloof female officer? She must be the former face of the Metropolitan Police Department, Officer Kashiwagi Misa? Last time in the bulletproof vest case, she made a big splash alongside this very person!

"Um, Jin." Kashiwagi Misa feigned surprise: "Eh eh? Jin, why did you detain Ms. Yamaguchi here? You still don't know? The Frontline Uesugi Chief already received the test results from Tokyo University, confirming that the deceased, Imazaki's agent, died from succinylcholine injection!"

"What?!" As a Career Track officer, Kashiwagi Jin also knew about death by succinylcholine injection, he blinked blankly, completely failing to consider how his wife got the news, his face flushing red then white, then glanced toward Yamaguchi Maho in the interrogation room.

This isn't what we agreed on at all!

So Kashiwagi Jin immediately lowered his voice and asked Yamaguchi Maho:

"Ms. Yamaguchi, how exactly did you obtain succinylcholine?"

Yamaguchi Maho:

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