"Although the relationship with those four women is not clear, if the hatred is so great that it needs to be put down by murder, we have some clues." Officer Chiba handed a document to Mori Kogoro sitting next to him - after all, although Fei Yingli explained on stage, Mori Kogoro was the head of the family. "This is a document from an accident in January 1991: a drunken student fell to his death from a nearby cliff while on his way to Izu for a training camp at the Domoto Conservatory."

Mori Kogoro took the document and immediately saw the information on it. "Hikaru Soma, born on August 3, 1963, his mother died and his father is unknown, at the age of 28, a sixth graduate of the Domoto Conservatory of Music, and a flutist...... Witness testimony stated that the deceased had been drunk by the four men until he could not stand steadily, but the final autopsy report showed that the deceased's blood alcohol content was very low, far from being drunk, so the case was finally closed by an unfortunate accident. ”

"Father unknown?" Fei Yingli captures the blind spot. "His family is ......"

"My mother was a single mother who passed away five years ago." Officer Twilight shook his head and motioned for Fei Yingli to give up the illusion. "We really can't deny that it's possible that the father of [Hikaru Soma], who never showed up, killed them in order to avenge his dead son."

"But if that's the case, we simply don't have a way to investigate." Fei Yingli sighed. "Hikaru Soma's bodies have been cremated for a long time, and it's almost impossible to extract fresh DNA, let alone compare it with others."

"But at least we can do something now," Kogoro Mori suggested. "Now that we've made the judgment that Hikaru Soma's father might be the murderer, we can first examine the people inside the conservatory - first, considering that the first bomb was planted under the floor of the Domoto Conservatory and exploded when several of them were borrowing the piano classroom, the murderer should be someone from inside the academy and be able to know the schedule in advance."

Secondly, after Reiko Akiwa didn't drink the drink, the murderer immediately grasped this and immediately arranged the next attack. This means that the killer has a way to keep track of Reiko Akita's movements - considering that after she was taken to the hospital, no listening device was found in her belongings, it is reasonable to assume that the killer followed Reiko Akiwa all the way to the school and observed the music classroom where they were rehearsing. ”

"So what we're looking into is...... Have access to the classroom rental status registration list and were not at the school at the time of the incident? Officer Twilight summed it up a little.

"It also has to be old enough – Mr. Hikaru Soma was born in 1963, so his father must have been born before at least 1945." Mori Kogoro added.

"In addition, it is possible that someone who has studied the structure of Teidan Elementary School, and may have even been there in a short period of time - otherwise it would be difficult for a person to find out exactly which room they were rehearsing in from the building without following Miss Reiko Akiwa (after all, most people don't even know which music classroom in an elementary school is)," Fei Yingli continued. "Then, it's a good idea to take a look at Hikaru Soma's performance before his death and the record of his grades when he was studying at the academy, and see if there are any subjects that are obviously very high, or if there are any old teachers who treat him well."

"It's a pity we don't have a lot of time," Officer Twilight nodded, but sighed again. "I contacted Mr. Domoto to ask if I could postpone the concert, but he refused."

"Mr. Officer, can you imagine what would happen if this world-class concert were postponed? When he said this, Officer Twilight's expression was still a little scared. [A considerable number of music masters from all over the world have been invited to participate in this unprecedented event, and they have deliberately revised their attendance schedules for a large number of other events. Under such circumstances, can you realize that postponing this event would mean a loss of reputation for the academy, or even for the Japanese music industry? It is even likely that invitations from the Japanese art world will be considered unreliable or even untrustworthy for some time to come. So for such reasons, we must not postpone this concert, otherwise it will be a loss...... While this may be morally incorrect, it is certainly much greater than a few lives. ”

"In other words, we have to find the culprit of this series of events before an irreparable situation arises in the concert (or elsewhere)." Kogoro Mori nodded. "Check the space under the stage first to make sure there are no bombs or anything like that. So far, the killer has not used a pistol, but has used poisoning, driving, or explosives. Poisoning and driving simply can't be done in concert halls, so explosives are the only possibility. ”

"Then let them be lined with body armor if they can—the front seats should be all seats for internationally renowned musicians, and basically can't be where the killer is. If you are a little further back, you will usually choose to aim for the torso rather than the head, as it is difficult to have the opportunity to choose a place like the head and hit it. And body armor for the torso will be very useful at such times. "Fei Yingli seems to have thought of something when she says this." Yes...... If they were going to wear low-cut dresses, the effect of such a measure might be somewhat diminished. ”

Preparations for war are still ongoing.

……

"It sucks, honestly, I'm a little worried about whether I'll be able to perform well," Grumbling a little helplessly, Reiko Akiba looked at the brace on her lap and said to Hotaru, who was packing up her supplies. "This ...... Don't you have any more powerful painkillers? Even once, I just need 12 hours of absolute calm. ”

"This is already a fairly high-level painkiller, and if it is high...... The slightest carelessness can be life-threatening. Hotaru gently dissuaded. Even early-stage cancer patients don't need to use the same level of medication you are taking now. ”

"......" Reiko Akiwa was holding her mobile phone at this time, and the expression on her face was a little uncertain. That one...... Hurry up and pack up, we need to hurry up to the concert hall. ”