A cool breeze blows.

The girl's dark hair swayed in the light outside the window.

Ryota Kato, who was breathing and nauseous and wanted to vomit, was paralyzed on the ground weakly, only to see her smile kindly: "Of course, this thing wants to kill, but it's not that simple." The most direct reason is that it stinks...... Whether it is taken directly or in food, people will notice abnormalities as long as they take a bite, and no one will be stupid enough to swallow it. ”

Don't popularize science, I don't like to listen to it, rescue me first, I think I can still save it...... Ryota Kato was tormented by her physically and mentally, and he was really scared of her.

But the angel seemed to be a demon in disguise, and continued to torment him.

"If we want to kill people with potassium cyanide, we can't directly pour potassium cyanide into people's mouths, but we have to skillfully use some chemical tricks."

The childish girl's voice is a knowledge that sounds chilling in popular science.

"Potassium cyanide is a very stable substance, and generally speaking, it only enters the stomach and reacts with gastric acid to produce hydrogen cyanide, which can cause fatal poisoning symptoms. And potassium cyanide tastes very strange, and it is difficult for people to eat it obediently, so well, whoever we want to kill, it is better to simply let him inhale hydrogen cyanide gas. ”

Speaking of this, the angel suddenly sneered, shook his head and smiled, "But this won't work." Hydrogen cyanide is a gas that can be absorbed by the body through breathing or skin pores and wounds, even if you hold your breath. In other words, when the perpetrator releases hydrogen cyanide, he himself will be poisoned and die. ”

Can you tell us anything you should know at your age...... Ryota Kato trembled, feeling that the girl was becoming more and more like a demon.

"In order to kill people smoothly, I had to think of a way......" Iori Hanagi blinked her dark and bright eyes, and her expression was quite childlike and simple pride that had succeeded in her mischief, "sneak into the victim's house first, pour potassium cyanide and sulfuric acid into the toilet, and close the toilet lid." Inside the toilet, potassium cyanide and sulfuric acid react chemically, producing a large amount of hydrogen cyanide. When the master came home and wanted to go to the toilet, the Grim Reaper was swinging a scythe at him......"

But what if I don't want to go to the bathroom, you didn't do it for nothing tonight...... Ryota Kato wanted to yell at him, but he immediately remembered that the boss of the door had invited him to drink beer for free, and his heart trembled in vain.

I'll just say why is that big door so kind......

Shrouded in soft light, Iori Hanagi smiled faintly: "Since the toilet is not a closed container, there will definitely be leaks in the process. Hydrogen cyanide is a gas with a strange smell, in order to avoid a lot of strange smells in the bathroom, so you can notice the abnormality, so I turned on the exhaust fan to dilute the concentration of hydrogen cyanide in the toilet air in time. And because I control the quantity, I won't kill people all at once, and I'm worried that I won't be able to control you if you still have combat power, so I also did something on the light bulb. ”

After that, the girl looked at his bloody feet and nodded with satisfaction: "The effect is almost the same as the first time." ”

“……”

Ryota Kato bit his tongue hard.

The strong tingling sensation made him regain a little consciousness, and he asked the girl with difficulty, "You, what do you want to do......"

The girl leaned back in the chair, clasped her hands on her chest, the corners of her lips curled slightly, looked at him contemptuously and contemptuously, and said, "Surrender or die!" ”

Ryota Kato was silent.

Something suddenly occurred to him.

A few hours before the little boy died, it was also due to the light bulb in the bathroom that broke, and his feet were bloody and painful.

In order to relieve the pain, the little boy seemed to have taken a lot of painkillers and some sedatives to help him sleep, but that night, he was delirious and pointed to the apricot as a cool child, and fell from the third floor in fright......

Could this be a coincidence?

It's you who are paralyzed!

It's definitely the calculation of the girl in front of her!

If it was someone else, threatening Ryota Kato like this, he would definitely not surrender even if he died.

However......

Ryota Kato barely hesitated, and knelt at the girl's feet with his body propped up, his forehead slamming to the ground.

"From now on, you are my master......"

※

In the courtyard of Hanajo's house, Iinuma Xun is working with Hanajo apricot Kokomandala this kind of flower.

"Since ancient times, mandala has been widely used in medicine and can be used as a hypnotic, analgesic, sedative, etc. After the development of modern medicine, hyoscyamine, fairy pine, and atropine extracted from flowers are made into medicines, which also have the functions of antispasmodic, sedative, analgesic and anesthetic. ”

"So, a mandala is a good flower?" Hanajo Kyoko looked down and observed.

A white, huge mandala flower, right in front of her eyes, delicate and beautiful.

"Good or bad, it depends on how to use it." Iinuma Xun looked at her pleasing side face and asked casually, "Has Aunt Ryoko cultivated a lot of medicinal herbs?" ”

"Yes. In this yard, there used to be a lot of medicinal herbs, but later someone from the government department came to negotiate and said that the law does not allow private medicine, so she rarely planted medicinal herbs, leaving only some beautiful flowers......"

"Aunt Ryoko is familiar with pharmacy?"

"Didn't I just tell you, she's a doctor of pharmacy from the University of Tokyo." Hanajo Kyoko tilted her head to look at him, her eyes were cold, as if she was scolding him, saying that he didn't care at all about what he said to her.

When you say that, I'm just going to spank you...... Isao Iinuma laughed dryly, reached over, took her little hand and pulled it to his side, "Don't smell too much of the mandala, be careful that you see Aunt Ryoko tonight too." ”

The cheeks of the apricot in the flower city, leaving the beautiful and dangerous white flowers.

After she stood firmly, she tried to break free of the boy's palm, but after two or three shakes, the boy's broad palm still wrapped around her palm.

He's so big......

"Dog skin plasters are generally pestering, it's really annoying......"

The old aunt muttered in a low voice, letting him hold her white and tender little hand, not only did she not resist in her heart, but she also felt a little comfortable.

Iinuma Xun held her small hand, and while thinking in his mind, he slowly spoke: "If you take too much mandala plant alkaloid, you will have a disorder of consciousness. It increases the stimuli received from the outside world, and intensifies the delusions and delusions in the heart, and falls into a strange euphoria, which is called a hallucinatory state. ”

As he said these words, the face of an angel came to his mind.

She took a syringe and skillfully injected her father with a sedative......

"What do you mean?" Kyoko Hanagi seemed to sense that there was something in his words.

"The plant alkaloids extracted from the mandala can be used as sleeping pills or sedatives, but the slightest mistake in dosage and method can cause people to fall into a state of hallucination—that is, they cannot distinguish between fantasy and reality, causing a state of confusion of consciousness. So...... The two of them will mistake you for Aunt Ryoko. ”

Isao Iinuma said his guess.

"But, but, in this case, the forensic doctor can check ......" Before the words fell, Hanacheng Kyoko suddenly closed her mouth.

She fell into a deep confusion.

When a person has been taking drugs for many years, and another person has been injected with a large amount of painkillers and sedation, and the autopsy detects the plant alkaloid component of the mandala, will it still be taken seriously by the forensic doctor?

However, as soon as this idea emerged, it was vetoed by Hanahiro Apricot.

The drugs that can cause people to hallucinate are all prescription drugs with extremely strict management, and they cannot be obtained without a doctor's certificate;

Of course, eating a raw mandala can also cause hallucinations, but no one should be stupid enough to eat it, right?

As for extracting plant alkaloids by herself, it's even more impossible, she's just a high school student, and if it's her mother's kind of doctor of pharmacy, it's almost ......

After thinking for a few seconds, Kyoko Hanagi shook her head firmly, and said to Iinuma Xun: "Don't let you think in this direction again, otherwise, I will kick you out of the house immediately!" ”

"Good ......"

Iinuma Xun smiled and took her soft little hand: "Let's go, let's go into the house and have a look." ”