In Conan, people have a brain option system

This morning, Akikawa Sosuke didn't eat anything, but just drank some water.

Because Akikawa Sosuke considered what might happen today, in order to lower his blood sugar, Akikawa Sosuke gave up eating.

Akikawa Sosuke's physique is not very good, and he will easily feel dizzy if he doesn't eat breakfast.

But one advantage of lowering blood sugar is that it will make your face paler.

Akikawa Sosuke thinks that this may confuse Toda Kyouji's judgment.

Let him think that he turned pale because he was panicked because he guessed the truth.

After "eating" breakfast with Itakura Misaki, Akikawa Sosuke went back to the room before going to the film festival exhibition area together.

And this time he went back to the room to prepare for the possible plan of framing.

Because Akikawa Sosuke considered that Toda Kyouji didn't have the handle to block him from telling the truth.

So things can't be done as carelessly as Nishihara Koichi and Ohkawa Takao.

Then when he wanted to use the "murder weapon" prepared by Yuda Kyouji to frame the murderer, he could not leave any traces of touching the murder weapon.

The most important point is to cover the fingerprints and palm prints.

At this time, the candles and lighters he got from Takao Ohkawa came in handy.

Although Akikawa Sosuke was not restricted in his freedom, he could go to the supermarket or convenience store to buy the props needed to implement the plan.

But the reason why Akikawa Sosuke did not do so was that he did not want to leave hidden dangers.

Because once he entered the supermarket or convenience store, he would definitely leave evidence in the store's surveillance.

What if the detective or some police really suspected that he had deliberately covered his fingerprints and investigated the surveillance.

Then Akikawa Sosuke would still be exposed.

So the safest way, of course, is to cover the fingerprints with existing things.

After the paraffin wax is heated and applied to the hands, it will form a wax film that can hide fingerprints.

And one advantage of paraffin wax is that it can be removed with just fingernails.

But correspondingly, the biggest disadvantage of paraffin wax is that its strength is too low.

In order for Akikawa Sosuke to successfully implement his plan of framing the murderer, in addition to not being able to leave marks on the murder weapon, there is another important point, which is that he must let Toda Kyoji touch the murder weapon.

Akikawa Sosuke knew that Toda Kyoji would definitely come to stop him because he was afraid of letting himself die.

In this case, if Toda Kyoji clenched his palm and he held the murder weapon in his palm, it would not be enough to cover the fingerprints with paraffin wax.

Because the strength of paraffin wax is too low, it will easily leave marks due to friction or force.

This will definitely not fool the eyes of detectives.

So what Akikawa Sosuke has to do is to increase the strength of the paraffin wax that covers his fingerprints and palm prints.

This is what Akikawa Sosuke did after he finished breakfast and returned to the hotel.

The composition of paraffin wax is composed of alkanes (hydrocarbons), and the chemical structure is a straight-chain or branched long-chain hydrocarbon.

After it is mixed with saturated fatty acids, the long-chain structure of saturated fatty acids and the alkane chain of paraffin can be entangled with each other, forming a stronger intermolecular force, significantly increasing the melting point and hardness.

In addition, ester components can also increase the complexity of the molecular structure of wax, enhance its physical strength and wear resistance.

The above-mentioned things can be found everywhere in daily life, and Akikawa Sosuke can get them without going to the supermarket.

The main component of the candle in Akikawa Sosuke's hand is paraffin.

The other two things he chose to increase the strength of paraffin are skin cream and lip balm.

Skin cream contains stearic acid, which is a long-chain saturated fatty acid.

Lip balm contains beeswax, which is composed of esters, fatty acids and long-chain alcohols.

Add these three things together in proportion, heat, mix and cool them, and you can make a stronger "mixed wax".

Akikawa Sosuke did not apply the mixed wax completely to his palm.

Instead, he only applied it to the thumb and index finger of his left hand, and the base area of ​​the other four fingers from the palm of his right hand to the thumb.

When Akikawa Sosuke took out the dagger from the evidence bag, he used the thumb and index finger of his left hand.

When he held the dagger with both hands and stabbed himself,

although his right hand was inside, the dagger was actually fixed by the thumb of his left hand hidden in the palm of his right hand and the roots of the four fingers of his right hand.

These two parts alone were enough to fix the dagger, and because of the presence of the mixed wax, there was no need to worry about leaving fingerprints and palm prints on the dagger when Toda Kyoji grabbed his hands.

Later, when Toda Kyoji was trying to stop Akikawa Sosuke from "committing suicide", there was a knock on the door outside.

Akikawa Sosuke knew that the time had come, so he took the initiative to retreat and pull out the dagger while Toda Kyoji's attention was distracted, and at the same time, he broke his hands out of Toda Kyoji's hands.

In this way, the dagger was thrown into Toda Kyoji's hands.

And this scene seemed to people outside as if Toda Kyoji had pulled the dagger out of his neck.

Because Toda Kyoji knew that he had grabbed the dagger.

Then when the forensic police found that there were no fingerprints on the dagger, he would definitely guess that he had used some method to cover up the fingerprints.

In order to eliminate this possibility again.

When Conan was controlling his bleeding, Akikawa Sosuke used his bloody right hand to grasp Conan's left arm.

Since Akikawa Sosuke only had the mixed wax applied to a small area from the palm to the base of his fingers on his right hand, the palm prints and fingerprints would still be clearly left on Conan's clothes.

The area where the mixed wax was applied would not leave palm prints, but since the blood itself would spread when it was stained on the clothes, as long as there was blood in the palm area, a clear palm print would be left.

In this way, as long as Akikawa Sosuke lightened the force on the tips of his five fingers when grasping the arm of the Shinigami elementary school student, the fingerprints of the five fingers stained with blood would be clearly left on Conan's clothes.

This also proved that there was nothing applied on his right hand.

At that time, as long as Toda Kyoji pointed out that he had applied something on his right hand to cover up the fingerprints, he would definitely be considered a liar.

In this way, the fact that he relied on suicide to frame Toda Kyoji,

also changed,

and became Toda Kyoji wanted to kill himself and tried to bury the truth.

As for the last, how to remove the mixed wax with enhanced strength from the hands.

Since the strength of the mixed wax is much stronger than that of ordinary paraffin wax, it cannot be easily removed with fingernails like paraffin wax.

At this time, there are two ways to effectively remove the mixed wax.

One way is to heat it again to soften it.

The other way is to use ethanol to dissolve some of the wax and oil components to soften them.

Akikawa Sosuke, who was attacked by a dagger on his neck, certainly had no conditions to heat the mixed wax on his hands.

However, as long as he lost too much blood, the rescuers would definitely connect him to a pulse oximeter to monitor the oxygen saturation in his blood.

Before connecting the pulse oximeter, you must wipe your palms with medical alcohol to ensure that there is no grease, dirt, and blood stains.

And medical alcohol has another name, which is a 75% concentration of ethanol solution.