It's half past eight in the evening, and after school, Conan, Xingchen, and Gray Yuan are looking for his brother for Shunya in the next class, and then they inadvertently destroy the base camp of the counterfeit banknote syndicate, and now go to Shizuoka to ask Professor Hirota for a USB flash drive containing APTX-4869 data.

So far, none of the three elementary school students have had time to eat dinner.

Of the three, Conan may be able to ignore his stomach in order to restore his original state, but Xingchen has to think about Xiao Wai.

Xingchen pointed to the car service area not far in front of the highway and said to Dr. Asasa, "Let's stop the car in the service area, I'm going to buy a bento for Gray Yuan." ”

Although Conan was anxious, he did not open his mouth to object.

Now that it has been confirmed that the information is in the hands of Professor Hirota, and a meeting time has been agreed with him, it seems that there is no need to worry about these few minutes, and Conan himself is hungry.

Dr. Asa pulled over to a dedicated parking area, and the group walked into the convenience store in the service area.

According to convention, even if Conan and Gray Yuan are really old, they are not over twenty, they are considered minors, and the eldest Dr. Asa should pay for the departure of several people.

But this time, Xingchen took the initiative to stand up and said, "Xiao Ai, what do you like to eat?"

Gray Yuan's attitude towards the stars is to accept the sugar coating and return the cannonballs. She unceremoniously picked up the most expensive beef bento in the refrigerator and ordered a cup of freshly ground black coffee at the cash register.

"Xiao Ai, it turns out that you like to drink black coffee?" Xingchen seized the opportunity to inquire about all the hobbies of Gray Plains.

"I often have to stay up late at the institute, so I gradually got used to drinking black coffee. I'm curious, why do you like to drink coffee milk?" Gray Yuan asked with interest when he saw Xingchen holding another bottle of coffee milk in his hand.

"I know this!" Conan also picked out a curry pork chop rice and came to the cash register, he grabbed before Xingchen answered, and said, "It seems to be because Xingchen's girlfriend likes to drink it!"

Conan has always been the target of bullying, and now that he has finally found the weakness of the stars, how could he let go of this opportunity for revenge!

"Don't listen to Conan's nonsense. Xingchen hurriedly explained to Gray Yuan, "In fact, there is a legend circulating in our Didan Primary School. There was once a pair of childhood sweethearts, the boy lost to a girl because of a bet and needed to buy her a bottle of coffee milk, but the boy didn't buy coffee milk, and the two eventually parted ways and didn't get together. Later, the legend turned into that you can get love when you get coffee and milk, and this was all told to me by the aunt at the commissary!"

It is a matter of lifelong happiness, and the stars would rather believe in what they have than what they don't.

"Being able to use the incredible events on campus to promote goods, that aunt is really financially conscious!" Gray Yuan praised the aunt in the commissary.

After eating the lunch, several people got into Dr. Asasa's yellow beetle and headed in the direction of Professor Hirota's house.

Originally, Dr. Asasa wanted to buy a fruit basket on the road as a gift for his visit, but at this point in time, all the fruit shops were closed, and the idea of buying fruit was not particularly strong, so Dr. Asasa finally came to Professor Hirota's house empty-handed.

Pressing the doorbell, it was Mrs. Hirota who opened the door, and she greeted everyone warmly: "It's Mr. Agasa! I've heard my husband talk about you, four of you, please come in." ”

Changing into slippers at the entrance, Dr. Asasa followed Mrs. Hirota and asked, "Have the other guests returned?"

"Yes! There happened to be a few batches of my husband's students coming to see him today. Mrs. Hirota took Dr. Asa and the others to the door of Professor Hirota's study.

"Old man, your guest is here!" Mrs. Hirota knocked on the door a few times, but Professor Hirota in the room did not answer, and then Mrs. Hirota tried to turn the doorknob again, only to find that the study was locked.

Conan had a faint premonition, could it be that he was preempted by the black-clothed organization?

"Do you have a backup key?" Conan asked Mrs. Hirota on the side.

"There was no backup key in this room. Mrs. Hirota had not yet realized the seriousness of the situation, she just wondered why the door of the study, which was never locked on weekdays, could not be opened at this moment.

"Doctor, knock the door open for me!" Conan knew that the stars couldn't help at this time, so he had to ask Dr. Asa to help.

Conan and Asa both slammed their shoulders against the wooden door, and the door to the study was slammed open after hearing "bang!

Standing at the door of the study, everyone saw that the room was in a mess, with books scattered all around, and Professor Hirota was being crushed to the ground by a bookshelf, and there was a pool of blood next to his head.

Seeing this, Conan immediately rushed to Professor Hirota's side, reached out and pressed on his neck artery, and came to the conclusion that there was no need to call an ambulance, so he directly asked Dr. Asa to call 110 and let the police deal with Professor Hirota's death.

Seeing that her husband, who had been talking to her a few hours earlier, suddenly turned into a corpse, Mrs. Hirota suddenly cried silently.

Before the police arrived at the scene, Dr. Asa took Mrs. Hirota to comfort her in another room. Xingchen and Gray looked at the entire study, but they couldn't find even a USB stick, and in Professor Hirota's computer, they didn't find any valuable information.

The person who led the police this time was Officer Yokomizo, a police officer with a coral hairstyle who was also an old acquaintance of Xingchen, and a few months ago at the Izu Princess Hotel in Kanagawa Prefecture, it was this officer who handled the murder case of the Night Baron.

Officer Henggou didn't rush to investigate the case after coming to the scene, just leave the matter of collecting evidence to his subordinates to do it step by step, he first greeted Xingchen: "I didn't expect Xingchen you to be here!

Don't listen to the name of the stars on the lips of the horizontal ditch first. Xingchen knew that he only cared about Twilight, and that he was only mentioned in passing.

"My father just cracked a counterfeit money case today and seized a large number of tools for making counterfeit money, and I think I will see the news in the media in a few days. ”

Xingchen doesn't mind showing his father's exploits to Officer Henggou, so that he should get more extra help when investigating the case in the future.

"Officer Twilight is really a senior I can learn from, I didn't expect him to make such a big contribution so quickly!"

The officers of the Identification Division were still so efficient that they quickly deduced the cause of Professor Hirota's death, "Professor Hirota's fatal injury was a heavy blow to the back of his head, and it should be this trophy with blood next to his body." ”

Combined with the clues collected at the scene, Officer Yokogou touched his chin and analyzed: "It may be that Professor Hirota wanted to get something on the bookshelf, and when he climbed the bookshelf, his center of gravity was unstable, and as a result, he fell down with the bookshelf." Unfortunately, the trophy fell from the bookshelf to the ground and smashed into the back of Professor Hirota's head, killing him. ”

"The evidence is that all the doors and windows of this room are locked, and the only key in the room is crushed under the notebooks scattered on the floor. ”