The sodium hydroxide solution does burn the throat.

But that also depends on the concentration.

The concentration is low, not to mention that it is used to poison people...

Let's just put it this way, the kind of human lubricant used in some sensitive parts has sodium hydroxide thickening lubrication in it.

This ultra-low concentration of sodium hydroxide solution is completely dangerous and cannot burn the human mucous membrane at all.

And under Lin Xinyi's simple explanation...

You don't need to have studied junior high school chemistry or elementary school math to know how unreliable this ruse used to create an alibi is.

"That is—" everyone reacted.

Especially Matsumoto Police, his gaze at his son-in-law quietly became fierce:

"The dissolution time of the capsule doesn't mean anything at all, and Takasugi's alibi is completely invalid?"

"That's right..."

Lin Xin nodded and added:

"If I'm not mistaken, the murderer must have thrown the half-dissolved capsule into the jar of lemon tea with a large amount of sodium hydroxide."

"According to his thoughts, when we see the capsule, we will subconsciously think that he is poisoned with capsule-type sodium hydroxide."

"This technique could theoretically work somewhat, but..."

Speaking of this, Lin Xinyi himself was a little embarrassed.

He had just thought about it for ten minutes, but he didn't expect why the murderer would put such a capsule in the lemon tea.

I didn't expect it, I really didn't expect it...

The murderer put such a capsule because he was stupid.

"If you want to use capsules to confuse the public and mislead the investigation, you should put a few more!"

"There is only one capsule, just this bit of sodium hydroxide, is this intended to be used to treat people with excessive stomach acid?"

Hearing this mocking exclamation, the groom's official Takasugi Toshihiko's face was red and white.

It's not only a shame to look at, but it's also extremely funny.

"Mr. Takasugi, you said you came to the dressing room 3 minutes before the crime, right?" Lin Xinyi asked in a calm tone.

"Hmm...," Takasugi nodded stiffly.

"That's right."

Lin Xinyi's gaze suddenly became sharp:

"When Miss Maori and I rushed over to investigate, the can of lemon tea was still hot!"

"And when I saw Miss Sayuri drinking lemon tea before, she drank it cold."

"Her lemon tea is obviously because the murderer put too much sodium hydroxide, and the sodium hydroxide dissolved in water is exothermic in large quantities, and it will become warm!"

"And this warm lemon tea, before it even had time to cool down, Miss Sayuri collapsed in shock."

"This shows that when the murderer poisoned her, it was just a few minutes before she drank the poisoned drink."

"Mr. Toshihiko Takasugi—"

"You who only went to the dressing room 3 minutes before the crime is undoubtedly the biggest suspect in this case."

"I... I—" Takasugi Toshihiko became a little incoherent.

He no longer had the composure he had just had, and his face was full of panic.

At this time, Matsumoto's face was already difficult to see.

No matter how much he didn't want to believe it, seeing his son-in-law looking so helpless, as an experienced old policeman, how could he guess who the murderer was.

"Why did you kill Sayuri?"

"She loves you so much, asshole!!"

Matsumoto's body trembled violently, and his voice was full of pain.

Hearing Sayuri's name, Toshihiko Takasugi instinctively showed a guilty look.

However, after seeing the fierce face of the old man...

He gradually stabilized his aura, stood there majestically, and showed a cold smile:

"Hey, hey... father-in-law, and this Mr. Lin Xinyi. ”

"You two are the Metropolitan Police Department's administrators."

"As a manager, don't you know that you should speak with evidence?"

"I'm the most suspicious right now, but do you have any evidence that I poisoned me?"

Takasugi Toshihiko simply didn't pretend.

Not only did he no longer pretend to be a good person, but he even showed a happy smile unscrupulously.

This kind of resentful mood is not aimed at Lin Xinyi, who exposed his ignorant tricks, but at the old man Matsumoto, who still believed in him until just now.

It's as if he has a blood feud with Matsumoto Police.

"Takasugi, you..."

Matsumoto instinctively wanted to be angry, but he had lost the strength to do so.

He never thought that the man his daughter loved would really be such a cruel and ruthless monster.

"Why?"

Matsumoto held back the traces for a long time, and only held out one why.

But Takasugi Toshihiko snorted coldly and replied ruthlessly, "What why? ”

"I said I wasn't a murderer, don't wronged a good person."

"Don't talk nonsense without evidence, otherwise, I will ask a lawyer to sue you for insult and defamation by the Metropolitan Police Department."

"It's... Oops. Lin Xinyi's eyes froze:

Only then did he realize that this Mr. Takasugi Toshihiko was also a Tenryu.

Ordinary people can rely on a combination of evidence and interrogation to break through their psychological defenses, but this kind of big man will never honestly cooperate with the interrogation.

When they were invited to the Metropolitan Police Department for tea, not only were they not afraid, but they were able to say leisurely: "No comment, I'm going to wait for my lawyer to come." ”

Therefore, if you want to send this kind of chaebol son with a team of lawyers at home to prison, the chain of evidence must be impeccable.

But... How easy is that?

"There was no surveillance at the scene, no video recordings."

"And if this bastard dares to say such a thing, the fingerprints on that medicine bottle should have been wiped clean by him."

"As for the bottle... Even if he had his fingerprints on it, he could make an excuse and say that he had taken it when he came in to see Sayuri. ”

"The poisoner could have come in after he left, a murderer who probably didn't even exist."

"In the same way, even if there are his footprints, hair, and dander at the scene, none of them can prove that he poisoned and killed people."

"So... One can only hope for further testing. ”

"If there's any unrecognizable dander left on that plastic pill bottle, we might hopefully send him to jail."

Thinking of this, Lin Xinyi couldn't help but have a headache.

He's done his best, and he's just going to have to gamble on luck.

If we can't find hard-core evidence that lawyers can't pick, this Mr. Takasugi Toshihiko will basically be acquitted.

Lin Xinyi thought so in his heart.

And at this time... Mao Lilan suddenly stood up with some emotion:

"Mr. Lin... When sodium hydroxide is dissolved in water, it must be very quiet, right? ”

"It's big..."Lin Xinyi recalled his junior high school chemistry experiment: "There will be a lot of small bubbles coming out, and a lot of heat will be released." ”

"If you put too much of it, it may look like water is boiling."

"So... Is there anything wrong with this? ”

He stared at Maolilan curiously, wanting to ask her if she had found anything.

But Mao Lilan shook his head:

"I didn't find anything, just..."

"Sayuri-sensei, she probably really loves Mr. Takasugi."

"So... Even though she knew that Mr. Takasugi had poisoned her, she drank the drink anyway. ”

"Huh?" Everyone was slightly stunned, and Takasugi Toshihiko trembled when he heard it.

"You... What did you say? ”

The resentment on Toshihiko Takasugi's face turned into shock:

"Sayuri, she knows... Know that the killer poisoned her? ”

"yes." Maoliran sighed deeply.

She looked at Takasugi Toshihiko quietly, her gaze extremely complicated:

"I know, when Sayuri drinks lemon tea, she always takes small sips and tastes it."

"Because she said that this way you can slowly reminisce about the taste of childhood love."

"If that's the case, then she can tell when she takes a small sip that something is wrong, how can she be burned so badly?"

"Especially, when sodium hydroxide is dissolved in water and bubbles bubble up and heat up a lot..."

"Such an obvious change, would she really not notice it when she gently sipped the hot lemon tea?"

Mao Lilan paused slightly, and his tone became deeper:

"So, I think, Sayuri-sensei, she should already know."

"She knew her husband was poisoning her and that the person she loved the most wanted her dead."

"So she was desperate, she drank the poison thrown by her lover, and wanted to die as she pleased."

"Mr. Takasugi..."

Looking at Toshihiko Takasugi, whose expression was already shaken, a soft light quietly welled up in Mao Lilan's eyes.

The light was so pure, with a power that seemed to cleanse the soul.

She used such a seemingly extremely innocent way to torture Takasugi Toshihiko's heart:

"Don't you feel bad at all?"

"Sayuri-sensei, isn't that the one you love?"

"I—I—" Takasugi's face turned pale again.

But this time, the paleness was not the panic revealed by the subterfuge being exposed.

It's a pain and bitterness that comes from the heart, from the pure emotion.

"I think, while holding that warm cup of lemon tea."

"Sayuri-sensei's heart must be very cold."

Mao Lilan sighed with embarrassment:

"She loves you so much... Even, willing to pay for you! ”

"Say... What to say! ”

Takasugi Toshihiko covered his ears, as if he couldn't bear to listen to it anymore:

"These are your speculations... I'm not a murderer at all. ”

"And, who, who, whoever, would drink the poison himself!"

He admonished himself so deeply not to think about it.

But the poignant appearance of Sayuri who took the poison in despair still haunted his heart for a long time like a lingering nightmare.

"Sayuri's!"

Suddenly, another voice rang out in the crowd.

It was none other than Sayuri Matsumoto's college classmate and best friend:

"Others wouldn't do such a stupid thing, but Sayuri would."

"Because... She's such a stupid person! ”

"Toshihiko Takasugi, do you know?"

The lady of the best friend said indignantly for Sayuri:

"Sayuri, she knew from the beginning that you were approaching her purpose."

"He knows who you really are, and he knows your vendetta against her father."

"But she's still in love with you, she thinks you're a good person, and she's willing to be with you for the rest of her life—"

"But, Toshihiko Takasugi, what did you do to her?!"

"W-What..."

Takasugi Toshihiko fell into a stupidity:

"Sayuri, she even has those things... You all know?! ”

This was like the last straw that broke the camel's back, completely breaking the murderer's psychological defense.

"How so..."

"And I, what the hell did I do?!"

In the face of this shocking truth, and Maolilan's pure eyes that seem to touch the soul...

Takasugi gave up resistance completely.