Ke Xue: I picked up a bottle of sherry at the beginning.

"Oh, right." Dr. Agasa suddenly took out a small pendant-like object and handed it to Shiraizumi. "This is something I made by chance when I was developing the voice changer for Kamen Rider. I have no use for it, so I might as well give it to you."

Bai Quanyi took it and looked at it over and over again, but found nothing except a plug that looked like it needed to be plugged into a mobile phone.

If you don’t understand, just ask, “What is this?”

Dr. Agasa said mysteriously, "This device is amazing. It can not only change the ambient sound, but also recognize specific sounds and change them in a targeted manner or retain the original sound."

“…Isn’t it just a voice changer?”

It sounded so high-sounding that he almost believed it.

"Of course it is different from ordinary voice changers!" Dr. Agasa emphasized righteously.

Shiraizumi Mashi had no intention of arguing with a scientific genius like Dr. Agasa on this issue. He pressed the only button on the voice changer and decided to give it a try.

however--

"How exactly does it work? Why don't I feel like anything has changed?"

Conan had been eavesdropping openly for a long time, and finally waited for the opportunity to demonstrate his professional ability. When he heard Baiquanyi's question, Conan immediately volunteered to help him debug.

"It looks like the structure is different from the bow-tie voice changer and Kamen Rider voice changer made by the doctor." Conan looked at it carefully and suddenly said, "Could it be that this device must be used on a mobile phone?"

Dr. Agasa smiled mysteriously: "Congratulations, you got the answer right. I can give you one of today's rewards first."

“…Thank you, but no thanks!” Conan didn’t want the cookies with Kamen Rider printed on them at all.

Shiraizumi plugged the doctor's invention into his phone and called Dr. Agasa: "Hello, this is Shiraizumi."

Dr. Agasa deliberately turned his phone to speaker mode, and when Shiraizumi Masu's voice came out of him, it suddenly turned into a gentle female voice, which sounded very nice and there was no sense of incongruity.

Bai Quanyi pretended to be surprised. "It's amazing! It can be used to simulate other people's voices to make phone calls."

"Haha, actually, it's not just for this," Dr. Agasa explained proudly, "As long as there's a suitable converter, it can be used on all electronic products!"

So no matter what, it still cannot change the fact that this is a voice changer, and it is the kind of voice changer with severely limited usage scenarios.

Shiraizumi Mashi returned the voice changer to Dr. Agasa with great disgust and said that he didn't need such a thing.

Dr. Agasa's abilities are undeniable, and many of his inventions have been given the spotlight by his role as Conan. However, it's also true that some of his products are often humorous, making them more popular with children than adults.

Conan was bullied by Ai again

"Brother Baiquanyi."

Huiyuan Ai poked her head out of the door and said, "Why don't you come in? The children have opened all the cabinets in the room. I'm worried that they might break something expensive."

Conan was amused by Haibara Ai calling her a "child" all the time. He half-jokingly said, "If you break something, you can ask Brother Shiraizumi to compensate you."

"I wouldn't do that. I'm the big sister now, so please be polite."

Haibara Ai felt offended. She frowned angrily and knocked Conan on the head.

"Sister Huibara, you are bullying the children!"

"Hmph! You talk as if I bullied you a lot in the past. I'm bullying you just the same now!" Haibara Ai showed off her little pink fist.

However, Haibara Ai's little pink fist is enough to bully Conan.

Conan, the little brat who is not loved by his father and not loved by his mother, was so scared that he peed his pants.

"Wow, wow, wow...Brother Baiquanyi, please take care of your girlfriend." Conan cried.

Bai Quanyi stepped forward to stop Xiao Ai and said, "Okay, Xiao Ai, Conan is already pitiful enough, don't bully him anymore."

Huiyuan Ai pouted and said, "Who do you think is responsible for Conan ending up like this? He stole his mother and childhood sweetheart away. He's such a bad guy."

Baiquanyi said: "Alas... Conan can't protect them, so I'll do it for you. Let's take a good look at this villa together and ignore those children."

"Yeah." Haibara Ai is cold and sarcastic in front of others, but she is as sweet as can be in front of Shiraizumi Yoshi.

The villa, left behind by Dr. Agasa's uncle, is decorated in a classic, restrained luxury style. Rather than using large amounts of gold or expensive mahogany to enhance its beauty, the rooms instead feature vintage brass, rustic stone tiles, and simple yet well-made furniture.

Bai Quanyi likes this kind of decoration style very much, because when he walks in it, he will not feel impetuous, but a sense of tranquility and ease flowing quietly. He holds Xiao Ai's hand and walks casually, feeling very comfortable.

Conan's gaze lingered on the clock hanging in the center for a few seconds, and his attention was soon drawn to the portrait next to it.

"That's the portrait of Uncle Dr. Agasa, right?" Conan pointed at the portrait and said, "It seems he is quite rich, otherwise he wouldn't be able to invite an artist to his house."

Dr. Agasa replied, "Yes, this painting was created by my uncle the year before he died of illness. He specially invited a young painter to come here to paint it."

Conan asked, "Who is the girl in the painting?"

"That's his sister." Dr. Agasa stared at the girl in the painting and said, "Auntie Sadako lived here to take care of him because of his illness. My uncle hated meeting outsiders, and his sister was the only person he interacted with during that time. I heard that Auntie Sadako used to teach at a nearby elementary school."

"Where is she now?" Bai Quanyi walked over and asked.

Dr. Agasa didn't expect Shiraizumi to pay attention to this, but he still answered seriously: "Auntie Sadako returned to her hometown after my uncle passed away. After that, no one has ever set foot in this villa again."

Bai Quanyi ran his hand across the fireplace and looked at his fingers. "It's been fifty years, and this villa isn't very dirty. Is it true that no one has come to clean it?"

"No, this place is going to be demolished next month. I certainly won't do something meaningless." Dr. Agasa thought for a moment and said, "I think the reason why the house is clean is because my uncle asked that the villa remain in its original state for fifty years after his death. So the doors and windows are closed tightly."

"Ha, so it's going to be demolished next month!" Conan said disdainfully, "So you're using this house that's been vacant for a long time to let those little brats have a treasure hunt!"

"That's absolutely right." Dr. Agasa admitted his intention without any reservation. He also emphasized, "Shinichi, don't take it too seriously today. Leave the joy of solving puzzles to the children."

Conan, who was just about to reveal the inscription on his feet to the Junior Detective League, was choked by the doctor's words and chose to remain silent helplessly.

However, to his surprise, someone discovered the clue shortly afterwards.

Ai Huibara said to the other members of the Junior Detective League in surprise: "Look, there seems to be a line of words engraved here!"

"Ah? Really?" Ayumi was closest to her and was the first person to arrive. Mitsuhiko and Genta also ran over quickly.

They chattered around the words carved into the wooden floor.

"...What does this string of katakana mean?"

"Is it English?"

“It doesn’t feel like it.”

……

Huiyuan Ai raised her head slightly, looked at Baiquan Yi and asked, "Why would someone carve such words in their home?"

Conan was standing nearby, and the moment Haibara Ai spoke, he shifted his attention away from the Junior Detective League.

"Perhaps Mr. Kurisuke wanted to convey the secret of the treasure to future generations in this way," explained Shiraizumi Masu.

Haibara Ai did not easily believe such an answer: "But if that's the case, why didn't Mr. Kurisuke just tell Dr. Agasa where the treasure is? And...and the marks on the floor look very new, as if someone came in and carved something in the past few days!"

Conan's eyelids twitched suddenly, and he quickly winked at Dr. Agasa beside him.

Doctor, your plan is about to be discovered by the children! !

However, Dr. Agasa was watching the discussion of the Junior Detective Team with great interest and did not notice Conan's gaze.

"I know!" Huiyuan Ai's eyes suddenly lit up, and she said to the children of the Junior Detective League excitedly, "I know what this string of pseudonyms means. I think the treasure should be there!"

·· ·······Request flowers····· ·····

"Really? Really??"

"Wow, this time it was actually Haibara-nee who solved the puzzle first!"

Huiyuan Ai smiled and said, "I'll take you to find the treasure."

The three first-grade children happily followed Haibara Ai towards the ancient corridor, and their voices gradually faded away.

Bai Quanyi thought of what happened in this villa and said to Conan, "You can go and take a look."

Conan was speechless: "I'm not a childish kid."

Soon, with the help of Haibara Ai, the Junior Detective League found the wooden box under the bed.

There is a huge Kamen Rider sticker on the wooden box, which seems to indicate that the treasures inside are all related to Kamen Rider.

. ..... ...

"Wow! It's Kamen Rider!"

"Could there be some new Kamen Rider cookies in there? I've wanted this cookie for a long time, but my mom won't buy it for me!"

Mitsuhiko thought more deeply than Ayumi and Genta. Although he was also very happy to get these treasures, he was still more confused. "Don't you think it's strange? The last time we found a treasure map, we found a Kamen Rider action figure, and this time the treasure is also a Kamen Rider."

"Maybe the real owner of the treasure is Kamen Rider!" Ayumi guessed happily.

She was actually a very smart little girl, but the gift she had been looking forward to for a long time was placed in front of her, which made her subconsciously ignore some incongruities.

Huiyuan Ai frowned and seriously questioned: "How could the treasure in such an old villa be Kamen Rider? When this house was sealed, Kamen Rider hadn't even been born yet, right?"

"Besides," Huiyuan Ai reached out and touched the box, "Look, there's no dust at all."

"Because Kamen Rider has super powers!" Ayumi said as a matter of course, "But how did Asano-san guess that the treasure was here?"

Haibara Ai choked at her matter-of-fact words and explained helplessly, "If you read that sentence in the order of the 50-character kana chart by changing one place, it becomes... follow the direction of the arrow."

In the next two minutes, Haibara Ai recounted in detail how she found the bedroom opposite based on the strange hands of the clock, the deliberately nailed together spade playing cards, and the specially arranged chess sets glued together, and how she found the plane that was supposed to be on the table and the box hidden under the bed.

Conan stood at the doorway, his arms folded. After hearing this speech, which was truly brilliant even for a child, he lowered his gaze, and suddenly a bright light shone into his eyes.

Conan is a lecherous kid

Conan quickly walked to the bed and picked up a one-yen coin from the floor.

Of course, the movement on his side did not escape Huibara Ai's eyes. She asked in confusion, "What's wrong, Edogawa-san?"

"Sister Huiyuan, there is a coin here, but it's very strange." Conan looked at the coin over and over for a long time, "The coin is a circle smaller than the normal size and thinner."

Huiyuan Ai lowered her head and moved closer. She quickly noticed the difference: "Here, the Chinese character for 'country' is written in the complicated way it was written before. But the villa has been uninhabited for so long, maybe this is an old one-yuan coin."

"I think it might have been carved by an old man with very skillful hands." Conan pointed to a very small scratch and said, "This mark should be left by a carving knife."

"But...why the old man?"

"Because the word 'guo' is probably something only older people would use subconsciously, right?" Conan pondered. "And carving a coin obviously takes a long time. Although I don't know his purpose in carving the coins, I can be sure that he lived here for quite a long time."

Influenced by Conan, Haibara Ai also began to think about this problem. In fact, she felt something was strange from the moment she entered the house, but she couldn't put her finger on why. Now that she thinks about it, maybe it's because the house has traces of people living in it.

"There are more than just old people!" Ayumi, who was looking for tools to open the box, suddenly said, "I think there is a child living here."

Conan looked up and asked, "Why?"

"Because of the patterns. In the room we were in just now, many of the utensils had the same patterns painted on them." Yuan Tai poked his chin and recalled, "There were stars, moons and suns."

"What?!" Conan's expression instantly turned serious, "Where?!"

Ayumi immediately took him back to the original room, and this time, Shiraizumi Yi was already waiting for them with the door open.

Earlier, Shiraizumi Mashi and Dr. Agasa had discussed some of Agasa Kurisuke and Agasa Sadako. Dr. Agasa didn't have a very vivid memory of these two relatives, but it was clear that he missed them very much. As people reach middle age and old age, it's inevitable that they become more nostalgic for the past.

"That's the pattern!" Ayumi stepped on a pile of books and took out a porcelain plate from the cabinet. "There's the same pattern under the candlestick over there. I remember there's another one under the vase."

Conan checked it out as he was told, and his expression became more serious.

Shiraizumi Mashi and Dr. Agasa looked at each other and acted very professionally in their confusion.

"What's wrong?" he asked.

Just at this moment, Haibara Ai, Mitsuhiko and Genta walked in staggeringly carrying a large box of "treasure".

Hearing Baiquanyi's question, Huiyuan Ai replied: "Mr. Edogawa just found a counterfeit coin in the bedroom. He suspected that there was someone else living in the villa, and that it was an old man with very skillful hands."

Baiquanyi looked at Dr. Agasa and said, "An old man with very skillful hands. Why does this description sound familiar to me?"

"Uh..." Dr. Agasa smiled awkwardly, "Although I came here once recently, I didn't stay overnight, let alone engrave counterfeit coins."

Ayumi pricked up her ears curiously: "Has the doctor been to the villa recently? Why?"

"Huh? Uh... well, I just came over to take a look."

Dr. Agasa hesitated for a long time and did not give a reasonable reason, but the children of the Junior Detective League did not focus on this issue for a long time. They were soon attracted by Conan's look as if "something happened".

Ayumi jumped off the pile of books. "He must be quite naughty. He drew stars, moons, and suns behind so many things, but the combination seems a little different."

Conan took the plate from Ayumi and studied it carefully: "Brother Bai, do you know anything about dancing dolls?"

Although Bai Quanyi wasn't a fan of Sherlock Holmes, he had a system. The man holding the system was fearless: "Are you talking about the pattern of dancing dolls mentioned in the Sherlock Holmes novels?"

Conan's eyes showed a look of "as expected". He nodded slightly and said, "Abe Slaney deliberately made people think that it was a child's graffiti to avoid the attention of Hilton Cupid."

"Do you think this pattern has the same meaning?"

"Yes." Conan nodded heavily, "If you combine the three patterns on the plate, candlestick, and vase, you can see that the three patterns on the right are the same.