I'm in Detective Conan, and I start with the Grand Theft Auto system.

Akemi crouched behind the low wall at the edge of the rooftop and opened the file bag.

The wind made the edges of the paper tremble slightly. She pressed down the corner of the paper with her hand and quickly scanned the information inside.

A photograph, a few lines of personal information, and a train timetable.

After reading it, she frowned, looked up at Lin Shen who was fiddling with the long gun holster, and spoke with a complex emotion in her voice:

"This prosecutor... was targeted by the organization because he sent a gang leader and several of his associates to prison."

She paused, then lowered her voice, "Sigh... seems like a good person."

Lin Shen unzipped the gun holster, revealing the stock of an old-fashioned rifle inside.

He picked it up and weighed it in his hand. The coolness of the metal traveled up through his palm. There were a few small scratches on the wooden stock, indicating that it was an old item.

He pursed his lips and said without turning his head, "That prosecutor isn't necessarily a good person either."

Mingmei was slightly taken aback, as if she hadn't expected him to say that.

Lin Shen continued, "It's more likely to be a dog-eat-dog situation."

"In today's social environment, coupled with the extent to which class stratification has become so rigid... it's practically impossible for a truly good person to become a prosecutor through normal channels."

"Moreover, these so-called gangs, without exception, are all just puppets of the powerful and wealthy."

"Ordinary prosecutors simply don't have the power to send them to prison!"

After listening, Mingmei was silent for a moment, then slowly revealed a somewhat bitter smile: "Mr. Lin is right."

She stopped dwelling on the topic.

She put down the documents, walked over to Lin Shen, and glanced at the rifle in his hand.

The gun was long and slender, and the barrel gleamed with a cold gray sheen in the midday sun.

She reached out and gently touched the stock of the gun, then asked, "Mr. Lin, are you confident in your ability to aim this gun at targets on the train?"

Lin Shen shook his head decisively: "No. It's impossible."

"My sniping skills aren't high enough; I can't handle such a difficult mission."

"Moreover, it's using this old-fashioned sniper rifle, which makes it even more difficult."

"I can't even read the markings on the scope very well. If you ask me to shoot a target on a moving train, I'd basically be guessing."

Mingmei was taken aback when she heard him so frankly admit that he couldn't do it.

She stood to the side, hesitated for a moment, and then cautiously asked, "Well... how about I try?"

Lin Shen was genuinely surprised this time. He turned to look at her, a hint of astonishment in his eyes, and then, without a word, handed her the rifle he was holding.

"Have you practiced this before?"

Akemi took the gun.

While her grip on the gunstock wasn't exactly expert, it wasn't the posture of a complete novice who had never handled a gun before.

She nodded: "Back when I was still an outer member, the organization called me to a centralized training session once."

"However, the training period is not long, about a month."

"I've only learned the most basic things, and I know roughly how to use them, but I wouldn't call myself an expert."

Lin Shen smiled after listening and patted her on the shoulder: "Then you have to teach me. To be honest, I really don't know how to use a sniper rifle."

Upon hearing this, Akemi's hand holding the gun froze in mid-air.

She thought she had misheard.

A man who could lead her into the Metropolitan Police Department and blow up an entire building with an RPG is now telling her he doesn't know how to use a sniper rifle?

"Mr. Lin... are you serious?" she asked, quite surprised.

Lin Shen met her gaze calmly and nodded without any embarrassment: "Okay. Wait here for a moment, I'll go downstairs to get something."

He turned and left after he finished speaking, leaving Mingmei alone on the rooftop.

After a while, Lin Shen returned.

He was carrying a canvas travel bag.

He put the travel bag on the ground, unzipped it, and pulled out a gun.

When Mingmei saw what was in his hand, she froze on the spot as if a pause button had been pressed.

She stared at the gun in Lin Shen's hand, remaining silent for a long while before finally finding her voice: "You...you call this...a sniper rifle?"

Lin Shen looked down at the Barrett M82A1 in his hand.

It is nearly 1.5 meters long, with a matte black body, a thick barrel, and a folding bipod.

The gun exuded an aura of "I'm not someone to be messed with" under the midday sun.

He nodded confidently: "Yeah, of course it's a sniper rifle. I used to use it all the time when I played CrossFire, killing everyone."

Mingmei opened her mouth, then closed it, then opened it again. She felt that her language system had experienced a temporary malfunction for a moment.

She took a deep breath and said slowly, in a tone that required great effort to remain calm, "Well... okay."

"This can indeed be considered a sniper rifle. But it's an anti-materiel sniper rifle... Barretts are generally used to shoot down armored vehicles, radar, and light vehicles."

"Using it to assassinate someone... isn't that a bit too conspicuous?"

Lin Shen chuckled and patted the gun, producing a dull metallic echo: "There's no other way. My skills aren't good enough, so I have to make up for it with the weapon."

Looking at his sincere smile, Akemi remained silent for a moment before finally saying, "Um... could I carry it for a moment?"

Lin Shen generously handed the Barrett over.

When Akemi reached out to take it, her arm visibly sank down a little.

She underestimated the weight of the gun!

The weight of nearly thirteen kilograms made her shoulders tense up instantly. She quickly used her other hand to support the gun and barely managed to keep it steady.

She held it in her hand for a few seconds, and the weight of it was completely different from that of the light, old-fashioned rifle.

She only held on for a short while before returning the gun to Lin Shen, remarking, "This sniper rifle is really heavy."

Lin Shen took the gun, casually slung it over his shoulder, and smiled: "Yeah. But it's definitely very powerful too."

As Mingmei watched him stand on the rooftop, carrying a Barrett rifle that was almost as long as her upper body, looking completely relaxed, she silently gained a new understanding of this person once again.

She glanced down at her watch, then looked up and said seriously, "There are still two hours until the Shinkansen departs."

"In these two hours, I'll teach you as much sniping knowledge as I can."

Lin Shen nodded: "Okay."

Over the next two hours, Mingmei condensed the basic sniping knowledge she had learned during her month-long intensive training into a concise oral instruction.

She propped the old-fashioned rifle against the low wall on the rooftop and demonstrated it to Lin Shen while explaining it to him.

Starting with the most basic shooting stance, how to brace your shoulder against the buttstock to avoid being injured by the recoil when firing, and how to adjust your breathing to remain stable at the moment of pulling the trigger.

Next is how to use the scope, what the markings on the lens represent, and how to roughly estimate the target distance using the markings.

Then there are more complex things, such as the influence of wind direction and speed on the trajectory, the amount of compensation for trajectory drop at different distances, and the lead that needs to be calculated when shooting at moving targets.

Lin Shen stood to the side and listened attentively.

At first, he tried to memorize the data.

Distance, wind speed, angle, drop correction value—but as he listened, he felt like his brain had turned into a pot of porridge.

This kind of content cannot be "used immediately after listening"; it requires a lot of practical training to form muscle memory and intuitive judgment. He only has two hours now, and he doesn't even have the chance to fire a single shot.

As he listened intently to Mingmei's explanation of how many microseconds to anticipate when aiming at a moving target at a distance of 200 meters, he finally gave up.

He reached for the Barrett rifle lying at his feet, picked it up, and handed it to Mingmei: "You should do it. The calculations are too complicated; this job isn't for me."

Mingmei stared at the large weapon he handed her, paused for a moment, then put down her rifle and took the heavy Barrett.

She propped it up on the low wall of the rooftop, knelt on one knee, peered through the scope's eyepiece to test the field of view, and then whispered, "Hmm... I'll try my best."

Lin Shen held the old-fashioned rifle that Gin had left behind in his hand, stood next to her, and said in a relaxed tone, "Don't feel too much pressure."

"If you can't kill me, I have other tricks up my sleeve."

As he spoke, he bent down and took something out of the gray travel bag.

Akemi looked away from the scope, turned her head, and her pupils suddenly contracted, her mouth agape.

Lin Shen was carrying a Stinger missile launcher tube, the tube gleaming with a matte dark green luster in the sunlight.

He slung the thing over his shoulder and said cheerfully, "With this, we're pretty much guaranteed to win."

Mingmei stared at the stinger launcher, opened her mouth, then closed it again, then opened it again, but ultimately said nothing.

She gave a wry smile, shifted her gaze back to the scope, and said in a low voice, "I understand now why you could be so unrestrained in front of Gin, Mr. Lin."

If she could pull out a poison stinger at any time, she would dare to speak loudly in front of Gin.