"Lead ink?" Hoshino Kaede asked in surprise. "How are you sure?"

"The shape of this tattoo is not perfect," Gregory rolled up his sleeves again. "So it is definitely not made with a professional tattoo mold. And as long as you look at it a little, you can see that the upper outline of the heart shape is actually not coherent.

line, but a shop name - this shop was a very famous cheap chain tattoo shop about 30 years ago. The reason why they were cheap was because they used cheap homemade ink, which contained far more than the normal dose of lead.

Although this heavy metal cannot be the culprit of epilepsy in any way, it still means something - if you want to send him for an MRI, you must be prepared to deal with the two charges of damaging public property and manslaughter at the same time.

"

An MRI is essentially an electromagnet with amazing power. If you send a person with heavy metals in his body into it, who knows what will happen.

"Considering that his eyes are no longer visible, and the scopolamine patch Hoshino re-attached has effectively alleviated the frequency of epileptic seizures, there should be a problem with the central visual nerve." Gregory waved his cane in his hand.

"Test his brain waves to see if there are any signal problems that cannot be detected by CT. In addition, Hoshino, take the little guy to Mrs. Nagano and ask her to take you to his house to search. The key point

The object of attention is to see if there are any places that Mr. Nagano often touches, but that Mrs. Nagano rarely goes to. The little guy is responsible for looking for any hidden treasures, and you are responsible for checking if there are any problems."

At this moment, someone knocked on the door that was covered by the curtain. "Mr. Asker?"

"This sound is..." Gregory said after thinking for a moment. "What are the results of the toxicology screening?"

"The tests for common toxic foods, animals and plants are negative," the man outside the door replied after a pause. "And the tests for common poisons are also negative."

"Common poisons?" Gregory was stunned for a moment and then looked at Hoshino Kaede.

"I didn't ask for it." Hoshino Kaede was also stunned and shook his head quickly.

Gregory frowned, then walked to the door, opened the special curtain there, and asked the people outside through the door. "Who added the common poison test?"

"Ah?" Qianyu could feel the confusion of the person outside the door just by listening to the voice. "It was a young man wearing glasses. He said that Mr. Hoshino wanted us to add additional tests for common clinical poisons."

"Conan?" Qianyu and Hoshino Kaede both realized who he was talking about at the same time.

"Let's go find Mrs. Nagano immediately," Hoshino Kaede said. "By the way, I'll wear an extra pair of gloves for anyone we may meet."

…

The entrance to Nagano House.

"Where are you going?" Hoshino Kaede, who was standing behind Mrs. Nagano who was opening the door, asked when he noticed that Qianyu seemed to be leaving.

"Just in case," Qianyu said. "If nothing else happens, we will meet at the house where Mr. Nagano was found."

Chiba came to the window of the room where Mr. Nagano was found - just like when they first found Mr. Nagano, the window was wide open.

Chiba's "just in case" is that if someone happens to do something at Mr. Nagano's house, Chiba can block him from here and prevent him from running away.

The survey on common poisons requested by Conan gave Qianyu a reminder - Mr. Nagano's illness may not be a natural disaster, but a man-made disaster.

The three disciples of Nagano Koji who might have committed this crime were probably the three disciples of Nagano Koji. If Nagano Koji had used the excuse to go to the toilet and climbed over from the window during the time that Nagano Koji was staying in his room, it would have been entirely possible for everyone to do so.

He plotted against Nagano Koji without being aware of it. As long as Nagano Koji was hit on the head from behind, causing brain damage, all of these phenomena would be possible.

However, this theory still has the following problems.

1. Qianyu doesn’t know if the visual area and the area that causes epilepsy are together, and whether it might be hit by an external blow.

2. Nagano Koji didn’t even have any blood left, and he had no obvious symptoms of trauma. In this case, is it possible for him to hit an attack that could damage the brain?

3. Where can I obtain the blow tool that hit Nagano Koji, and where can I throw it away?

Qianyu stretched the seamless umbrella through the window to use it as a hook, and then used this laborious lever to pull herself from the window onto the windowsill. Then she took off her shoes and landed lightly on the floor.

There was no unusually placed furniture, no signs of rearrangement, and no blood stains on the floor.

It seems that the possibility of a planned crime can almost be ruled out - if it is really a planned murder, an unavoidable question is how the murderer planned to kill Nagano Koji.

Option a: If a weapon is used to hit, it is almost impossible for the murderer not to produce blood stains - but the floor is very clean, with only a very small amount of dust remaining, and it cannot be seen that it has been cleaned. If the murderer uses the method that it is impossible to produce blood stains,

If he hits with too much force, it is very likely that he will be unable to kill Nagano Koji as he is now. So what is his purpose?

Plan b: If it is an unarmed attack, the murderer cannot even guarantee that he can deprive Nagano Koji of his ability to call for help and resist with one attack. As long as Nagano Koji shouts, the attacker's plan will completely fail.

"Are the windows here open?" Hoshino Kaede walked in from the door, holding a camera in his hand.

"It doesn't matter," Qianyu nodded. "Are you going to take a photo of the scene here?"

"Yes," Hoshino Kaede nodded. "You put on your gloves first, then open everything that can be opened, and I will take pictures slowly."

"Okay," Qianyu nodded and walked towards the nearest cabinet - then he was startled by something that suddenly moved on the cabinet. If the auxiliary unit hadn't brought him back to his senses in time, he would have definitely shouted

come out"!!!"

The cat he had seen before lay lazily in front of the still full food bowl, staring at him lazily.

"Heartless foodie." Qianyu glanced at the cat, confirmed that it had no intention of attacking him, and then opened the cabinet door.

…

When Qianyu and Hoshino Kaede completed their examination and were about to return to the hospital with Mrs. Nagano, the sky was already a little dark, and every household had turned on the lights. The orange light almost made up for all the grace that the sun had withdrawn.

"I have no clue at all..." Qianyu said with a frown. "And I thought I could meet Conan here."

"The key now is," Hoshino Kaede also frowned. "What disease does the patient have?"

Behind them, the cat was still lying in front of the full food bowl on the cabinet, lazily watching them leave.
Chapter completed!