"New items?" Sitting on the Beetle, Chiba asked. "For all of us?"

"That's right," Dr. Asasa nodded. "Self-defense items for all of you - although you and Conan both have self-defense abilities, Ayumi and them don't, so I made this new item."

"But why did you take us in the car to pick it up?" Thousand Feathers tilted their heads. "If it's a prop you made, shouldn't it be in your house, Doctor?"

"I'm just good at mechanics, and that guy has a lot of knowledge in materials chemistry, so I commissioned him to coat these props." Dr. Asa said. "This way, the new prop can be used underwater without damage."

"Underwater?" Conan asked. "Electronic props?"

"yes," Dr. Asasa nodded. "The main structure of this item is an electronic prop, but a mechanical mechanism is added to store it...... The material for self-defense is enough. ”

"Materials?" Thousand Feathers raised an eyebrow. "Disposable?"

"That's right," Dr. Asasa said with a smile. "But don't worry, this thing is very easy to replenish!"

"It's convenient......" Qian Yu pouted.

Since it is a very convenient material for self-defense, it shows that this part is obviously a low-end weapon with relatively no technical content...... Although it may be very useful, as a mechanical expert, Chiba still thinks that those precision creations with intricate ingenuity are more to his liking.

"Those mechanisms of yours don't have any high-tech to go," the corners of Gray Yuan's mouth, who was sitting next to Qianyu, slightly hooked up after seeing Qianyu's expression. "If the mechanism is broken, it won't be complicated, and the value of a mechanism lies in how effective it is, isn't it?"

"Yes." Thousand Feathers shrugged.

"That's the way forward," Dr. Asa said as he slammed on the brakes.

……

It was a single-story villa area, and Dr. Asa parked his car in front of a villa - the name Chiba on it was not very impressive, and it was clearly not a celebrity.

Dr. Asasa walked over to the door and rang the doorbell.

Moments later, a middle-aged woman opened the door. "Who are you?"

"I'm a friend of Dr. Nagano, and I came to pick up what I asked him to make." Dr. Asa said. "At his request, I brought the children with these products."

"Ah, okay," the middle-aged woman nodded, and invited Dr. Asasa into the room with Chiba and the others. "Hongji, you're a guest!"

When Qianyu and the others walked to the living room under the leadership of this lady, who was obviously a lady, a middle-aged man and three young men were already sitting in the living room.

"Doctor, you're here," the middle-aged man laughed. "Well, it's a bunch of kids!"

"After all, it's like you said," Dr. Asa replied with a smile in the same way. "No adult would use this kind of badge, would they?"

"Well, come, here's what it's for you." Hiroharu Nagano opened a box that had been placed in front of him and handed it to Dr. Agasa. "Six copies."

"Hmm," Dr. Asasa opened the box and looked at the contents. "The materials are quite exquisite, and I was worried that you would use any materials that smell too big to handle the medals."

"How is that possible," Hiroshi Nagano pouted. "I'm not weak enough to make high-quality paint that even a kid can use."

Dr. Asa handed the box to Conan beside him, who curiously pulled out a badge - a Sherlock Holmes-shaped badge with a small black box hidden on the back of the badge - which was apparently the electronic part.

"Badge?" Surprised, Qian Yu took the box from Conan's hand and took out a Sherlock Holmes-shaped badge as well.

The whole badge is not too heavy...... The small box on the back of the badge has a small opening at the bottom that looks like it has been temporarily blocked by two half-moon plugs – the most common use of this small opening is to spray liquids. However, if this small box is used to hold the kind of self-defense materials mentioned by the Doctor, the electronics are in ......

Chiba handed the box to Gray Hara, and then fumbled for the badge.

The box has a knob at the top and a button on each side of the symmetrical position.

Judging from the two half-moon plugs in the small mouth, the buttons in these two symmetrical positions should be the starting mechanism of these two stoppers.

Chiba pressed the remaining knob.

Then, the badge in Conan's hand, the badge that Gray Yuan Wai had just taken out of the box half of, made a "didi" sound, and the box also emitted a more dense "didi" sound.

"Oh!" Qian Yu let out an exclamation and quickly pressed the knob again, and all the badges fell silent again.

"You're smart," Koji Nagano looked at Chiba all the time, and nodded approvingly at this point. "That button is the switch for the entire radio intercom system. With a single press, the badge will be connected to the communication channel and a communication request will be made to other badges at the same time. As for the two symmetrical buttons, if pressed together, they will spray pepper water from the bottom of the badge, and as long as they can be sprayed into the eyes of the bad guys, they can easily knock back enemies. ”

"Pepper water," Chiba tilted her head, looking at the spout at the bottom. "Excuse me, how far can you spray?"

"One meter to one meter five," said Hiroshi Nagano, spreading his hands. "I know the distance is a bit short, but also consider that the badge itself is so small and has very limited ejection power – even that range would have to use up the vast majority of the remaining power of the badge battery."

"Excuse me," Chiba asked. "This spout is so big, is the pepper water sprayed out of it a scattering spray?"

"yes," Hiroshi Nagano nodded. "After all, while this will reduce the power, it will also make it easier for you to spray the spray into the eyes of your enemies."

"......" Qian Yu looked at the spout, but he had a plan in his mind.

If you make this mouth smaller, you might be able to get a high-pressure pepper water gun out...... With the calculation of the support unit, even if you can shoot only a thin pepper water line, you should be able to accurately hit the enemy's eyes......

Just then, Mrs. Nagano came over with a pot of tea and began pouring tea for everyone. "Please."

“？” Chiba glanced at the number of cups, but found that there were only ten cups - there were six children including Dr. Asasa and Chiba, Hiroharu Nagano and three young men, and it was theoretically necessary to have eleven cups.

"It's almost lunchtime, I'm going to get insulin first." Koji Nagano bowed slightly, and then left the place.

"Huh?" Dr. Asa froze. "We're just here to get the badge, how can we ...... you?"

"My husband is very fond of children," Mrs. Nagano explains. "Maybe he saw these cute little ones, and he liked them very much—and when he knew you were going to bring the little ones, he told me to cook enough for your number."

……

Twenty minutes later, everyone was seated at the table – except for Hiroshi Nagano, who hadn't finished his insulin, and Mrs. Nagano, who went to find him because she felt that Hiroharu Nagano's tardiness was a bit rude.

"It doesn't take that long to take insulin." Gray Yuan frowned slightly. "Why hasn't Mr. Nagano come back yet?"

"Teachers usually have a habit of continuing to work after taking insulin," said a young man. "Maybe the teacher worked too hard and forgot to eat, right?"

"Maybe the teacher remembered something when he was taking insulin? This kind of thing happens a lot. The second young man said.

"Maybe the teacher went to see his favorite statue of Tang Sancai, right?" The last young man said. "The statue is really beautifully made, so I love it."

At this moment, Mrs. Nagano's anxious voice came from outside the door of the restaurant.

"Old man? Old man? Wake up, old man? ”

After everyone fell into consternation, Chiba reacted immediately, rolled out the chair, followed the direction of Lady Nagano's voice that kept calling, and after a few turns, came to an open door.

Koji Nagano collapsed in front of a cabinet where Tang Sancai was placed, already unconscious, and no matter how much Mrs. Nagano shook his body in panic, there was no response.