Refuse to allow Conan to join the main storyline

Shinji Hagiya had a stereo brought in, put a tape inside, and placed a piece of paper and pen in front of Koizumi. He said to her, "I'm going to play this recording for you now. Please write down the key words you think are important."

Koizumi: ...

Ah, this sudden listening test...

She picked up the pen speechlessly and nodded to Shinji Hagiya.

But when the recording started playing, Koizumi was dumbfounded.

First, the sound of fabric rubbing against each other was heard from the speakers, and then the background noise became louder and louder, as if the person recording the video had walked into a vegetable market. It was noisy, as if countless people were talking and shouting, and vaguely a voice like that of an announcer could be heard saying something very quickly.

The worst thing was that, not sure if it was a problem with the location or the recording equipment, Koizumi could always hear a very harsh high-frequency noise.

Although it was only a short audio clip of less than two minutes, she felt her head explode after listening to it. When the recording ended, there was still not a single word written on the paper in front of Koizumi.

She closed her eyes and pressed her temples hard.

Mao Zuka moved next to her, looked at the two men opposite with unfriendly eyes, and asked: "Boss, are you okay?"

Shinji Hagiya had an expression on his face as if he had a toothache, and he looked at Nekozuka with resentment.

Koizumi waved his hands, and waited for the buzzing in his ears to subside before he took a breath and said, "Number 1, number 4, number 15, Dorothy, apple, 1 to 20, that's about it. Is this the recording near the betting window at the racecourse?"

With every word Koizumi spoke, a hint of surprise appeared on Shinji Hagiya's face opposite him.

"Is this really what you just heard?!"

"if not?"

After such torture, Koizumi's mood took a sharp turn for the worse and his tone became impatient.

Shinji Hagiya didn't care about her attitude at all. He turned to look at Dr. Hagiya and asked in surprise, "You really didn't give her the test paper in advance?"

Doctor Gu laughed and said, "You have so many recordings, how would I know which one you want to bring?"

Shinji Hagiya's expression was immediately astonished.

"I've had many people with keen hearing try it, and even tried using professional instruments to analyze it, but you're the first one who was able to find these keywords the first time. This ability is amazing! So valuable!"

"valuable?"

As soon as he heard this word, Koizumi immediately felt that the physical discomfort was relieved a lot.

Shinji Hagiya slammed the table excitedly: "Yes, it's valuable!"

He shouted to the person outside the door: "Quick, quick, bring me the most recent recording! And that person's recording!"

This time, Hagiya Shinji first let her listen to a recording of a man and asked her to remember the man's voice and just figure out what the man said. Then he played the second recording.

It is almost exactly the same as the first recording. If an ordinary person listens to it, it would probably just be a disordered and noisy noise.

Koizumi listened for a few seconds and then paused, rubbing his temple and saying, "I need headphones."

Shinji Hagiya immediately shouted outside: "Hurry up and get the headphones from the recording studio!"

After being yelled at by him, Koizumi, who was sitting next to him, couldn't help but cover his ears slightly, with a somewhat ugly expression on his face.

Doctor Tani hurriedly pulled Shinji Hagiya and gestured to him to keep quiet. Then he walked over, patted Koizumi's shoulder and whispered, "Are you okay?"

Since she had acquired acute hearing, this was the first time that Koizumi accepted such a challenge. She had never thought that her hearing could be used for such a thing, and she also wanted to test her limits, so she nodded and said, "Okay."

Shinji Hagiya didn't say anything else, but just nodded excitedly.

Doctor Gu said nothing more. He quietly returned to his seat and quietly observed Koizumi's expression.

Just as Koizumi expected, after putting on the professional headphones, she blocked out the interference from the surrounding environment and her ability to distinguish was indeed improved.

She concentrated her energy on trying to capture the voice of the man in her memory, until the recording was about to end, when she finally heard the voice speak.

"The first is No. 3, No. 11, No. 4, what wind, No. 1."

Shinji Hagiya stared at the note in his hand, his voice trembling with excitement: "Yes, all correct! Next, next..."

Doctor Gu suddenly interrupted and said, "That's enough. Let's stop here for today."

Shinji Hagiya glared, but saw his old friend walk to Koizumi with a serious expression, put the headphones back on her ears as if they were earmuffs, and asked in a deliberately low voice, "Can you hear me like this?"

Koizumi's face was a little pale, and he closed his eyes and nodded slightly.

Doctor Gu continued in a low voice, "You have never done any special training before, so you will feel very uncomfortable when you are suddenly stimulated. This is normal and will be relieved after a rest. Now we will all leave and you can rest here. If you still feel uncomfortable, come out and find me. I'll be waiting next door."

After saying that, he helped Koizumi lie down on the rattan mat, then quietly left the room with Hagiya Shinji and Nekatsuka.

Mao Zuka didn't want to leave, but under Dr. Tani's stern gaze, he finally retreated. However, he insisted on guarding the door of the room and refused to go to the next room.

Seeing that he couldn't persuade him, Dr. Gu told him to keep quiet as much as possible, then took his old friend away.

Shinji Hagiya frowned and asked, "Is it that serious?"

Doctor Gu glanced at him, and even though there was a wall between them, he still said in a very soft voice: "You can imagine the feeling of having a sonic boom bomb dropped next to your ear."

Shinji Hagiya stopped talking.

"Can't you see that she is forcing herself? Although this girl has good hearing, she has not received any special training. It is not easy for her to do what she did just now. She can indeed help you, but it is best to do it step by step. And ah..."

Doctor Gu smiled like an old fox: "I think you can start to consider the issue of compensation. This little guy is much smarter than you think."

It's indeed a bit of a stretch.

Koizumi really didn't expect that this recording would have such a big impact on her. She didn't have this symptom when she bombed the Daikoku Bar before.

A few months later, after the convenience store bombing, Koizumi once again experienced the pain of sensory turmoil. She felt dizzy, nauseous and wanted to vomit, and she dared not open her eyes.

After lying motionless for a long time, Koizumi slowly came to his senses and cautiously opened his eyes.

It seems that she underestimated the sensory riot and just preparing ordinary earplugs for daily use might not be enough.

If she encountered a sonic attack during a battle, or had to enter a particularly noisy environment, like the one just now, she would most likely become abnormal or even lose control of her body. In that case, no matter how fast and agile she was, it would be useless.

If the people in the organization discovered that she had this problem, they would undoubtedly seize her weaknesses and even find targeted ways to control her, which might bring fatal danger.

She had never gone to see Dr. Agasa before, one reason being that she was really poor when she first came and couldn't afford the commission fee. The other reason was that her overall strength was very weak and she hadn't figured out how to strengthen herself, so even with the help of props, she couldn't make much improvement.

Now is finally the time to upgrade your equipment in a targeted manner.