The rooftop of an abandoned residential building is located in a relatively remote location, and the high ground makes the view very wide.

The fence on the rooftop is so low that even a child can lean out half of it. Ritsu Sasashima narrowed his eyes slightly and looked at the river they were talking about, the distance calculated by the naked eye was 300 yards, which was quite a remarkable level among ordinary people.

According to Mitsuhiko Tsuburaya, there were four people on the rooftop at that time, and in addition to the man with the rifle, there were also three gunmen, and most of these four people were kidnapped with guns.

Threatening a sniper to complete an assassination mission? He's familiar with this kind of trick.

Ritsu Sasashima turned his head to look at the three children who were looking around, raised the corners of his mouth and smiled: "Children, the next thing is not suitable for you to contact, do you need my brother to call a police car to take you home?" ”

Riding home in a police car? Ayumi Yoshida said with disgust on his face: "Don't, we can ride back by ourselves." ”

"yes, in a police car like we're bad boys!"

"Goodbye, brother, I hope to see you catch the bad guy in the morning newspaper tomorrow!"

I don't know if they were afraid that they would be sent back in a police car or what, but the three little ghosts disappeared as soon as they slipped through the smoke.

After seeing them descend the stairs, Ritsu Sasashima began to look for them on the rooftop, and if the man with the rifle was held hostage, most of them would leave some clues, even if there was little hope, they would try to call for help.

After searching around the rooftop without finding anything, while descending the steps, Ritsu Sasashima accidentally discovers an ultra-thin calculator stuck in a crack in the rock.

Taking his gloves out of his pocket and putting them on, he bent down to pick up the calculator and found a series of mysterious numbers written on it.

3135134112.

What is this?

There was no way to decipher the code in a short period of time, but what was certain was that the person who shot at the gun was indeed threatened, and this was the distress signal he left.

Ritsu Sasashima sighed and put the calculator in the evidence bag, and walked quickly downstairs with one hand in his pocket, it seemed that he was going to be forced to work overtime on his rare vacation days.

He couldn't help but mutter, "Really, how has the crime rate in Tokyo increased recently?" ”

Taking a taxi to the Metropolitan Police Department, Ritsu Sasashima stepped into the elevator to the ninth floor, pushed open the double doors of the large office, and walked towards his seat.

Yuna Hayasaka, who didn't take a vacation today, looked at Takashi Onizawa suspiciously, and asked, "Police Department, aren't you on vacation?" ”

"It is suspected that there have been cases of forced shooting, and most of the gangsters used kidnapping to threaten the missing person to complete the shooting mission such as assassination." Ritsu Sasashima took out the calculator in his pocket and continued: "This is the distress signal left at the scene, I can't decipher what it means yet, you can help me check the records of the missing person reported in the past few days." ”

"If it had just happened, the disappearance would not have been filed within 48 hours, so I went to contact the operator, and they have a report record there." Yuna Hayasaka reacted very quickly and immediately picked up the landline to dial the internal line.

Miwako Sato, who was passing by, was curious after hearing the conversation between the two: "Onizawa Police Department, how did you encounter this kind of thing?" ”

"Oh, when I was looking for a food shop, I met three children, and they were the first witnesses to the rifle shooting." Ritsu Sasashima replied.

"In this way, you are really a responsible police officer, and many police officers will not believe what they say when they see that it is a child." Miwako Sato smiled, she still likes this kind of police officer who is good to children, of course, the kind of like that appreciates.

She is still a more traditional type in terms of aesthetics, and she can't accept the appearance of white hair and red eyes, even if she looks handsome. The Ghost Sawa Police Department is like an anime male protagonist who will be popular during the junior high school period, wait a minute... The Onizawa Police Department seems to have a nickname in the Metropolitan Police Department recently, and I can't remember it for a while.

"Isn't it true that the police have the consciousness not to miss any possibility? This reduces the crime rate and the ability to solve cases in a short period of time. ”

"If all the police were like you, the crime rate would drop dramatically." Miwako Sato walked to her seat, took a sip of her teacup, and asked, "Speaking of which, haven't you had lunch yet?" ”

"Let's crack this thing out before we think about lunch." Ritsu Sashima raised the calculator in his hand and replied.

Within three minutes, Yuna Hayasaka had received all the recent calls from the operator in Tokyo, and thirty percent of them were missing person reports that did not meet the conditions for filing a case.

After passing the screening, Yuna Hayasaka basically determined the missing person who was related to the case, she took out her mobile phone and dialed the mobile phone number left by the reporter, and after determining the identity of the missing person, she basically determined that he was the person he was looking for.

"Onizawa Police Department, the missing person has been found."

"You say."

Yuna Hayasaka manipulated the computer to adjust a police officer's blue-background ID photo, and said: "Through screening, I finally identified the missing person as this police officer named Koichi Yamabe, who used to be an Olympic rifle shooter, and he was completely eligible." ”

"Well, how did he go missing? Is there anyone else missing besides him? ”

"According to the testimony of Koichi Yamabe's mother, Mr. Yamabe, who was on vacation, went on vacation with his girlfriend Eri Onodera to go on vacation together, and originally agreed to return home for dinner last night, but did not return his mobile phone and turned off the computer all night, so Yamabe's mother called the police at 8:10 this morning."

Figuring out the identity of the missing person is naturally very helpful in solving the case, but what needs to be clarified at this stage is the calculator in hand.

Ritsu Sasashima stared at the numbers for a long time, and then eliminated those cumbersome ways to interpret passwords. If Koichi Yamabe had noticed the group of children at that time, he would have chosen the easiest way that would not be discovered by the gangsters.

Thinking of this, he couldn't help but flip the calculator over, looking at the content presented on it, he raised the corners of his mouth slightly, it turned out that this was what he meant.

Without rushing to give the answer, Ritsu Sasashima handed the calculator to Hayasaka and asked, "Do you have any thoughts on these numbers?" ”

Yuna Hayasaka is not very sensitive to numbers, she shook her head and said, "There is no pattern, I can't think of it at all." ”

"Don't think about the logic between numbers, if you're Koichi Yamanbe and only have an old-fashioned calculator on hand, what numbers would you use to send out a distress call?" Ritsu Sasashima thinks it is necessary to instruct Hayasaka in some practical case-handling skills, and he will leave the Metropolitan Police Department sooner or later, so she must grow up more quickly.

"First of all, the distress signal must be able to interpret the mission location, and secondly, the code must not be too obvious, otherwise it will be a big trouble if it is discovered by the gangsters." Yuna Hayasaka frowned at the string of numbers and asked, "Do you think this 162 represents a national highway or a prefectural road?" ”

The direction of thinking is not bad, Sasashima Ritsu shook his head and said, "Thinking more simply, it's like a code that a child can understand." ”

"A code that a child can understand?"

Yuna Hayasaka looked at the calculator in her hand and thought of the way she played tricks on the maid at home when she was a child, and after she flipped the calculator over, she exclaimed, "211HEISEIE!" ”

It seems that she has successfully answered, Sasashima Ritsu is ready to report the situation with the boss with one hand and apply for the use of helicopters and sniper rifles, who knows that Yuna Hayasaka changed her usual image of a cold beauty, and tilted her head cutely and said: "WHAT IS HEISEIE?" ”

“……”