The first person to be suspected was of course the teacher who issued the test papers, Liangshan Jian Village.

"I killed the student? How is this possible? ”

One police officer said, "You have the best chance of committing a crime. Potassium oxide can be applied before the test paper is issued. ”

Kenmura was about to refute, but Kana took the lead to help him explain: "Before the test papers were issued, all the test papers were sealed together, and the invigilator temporarily received the test papers, and after opening them, he couldn't wipe potassium oxide in front of his classmates, so it was impossible for the teacher to commit such a crime." What's more, the test paper is transmitted randomly, and who knows that the test paper with potassium oxide will definitely be transmitted to Gao Shan's classmates. ”

"It's not unreasonable to say this, but Mr. Liangshan's suspicion still can't be ruled out." Said the policeman.

In fact, Kana already had a reasonable answer in her heart. The most likely person to commit the crime was not the invigilator, but the classmate sitting in front of the deceased - Mihiko Fujisaki. She can take out her own after getting the test paper, and then smear potassium oxide on the damaged test paper - in fact, if the murderer is really Mihiko, then she should kill the last classmate sitting in that column - because, if most students see a mutilated test paper and a complete test paper, they will naturally choose the better one - that is the dead Gao Shan. If he takes a good test paper, then the student sitting at the end has no choice - murder by the torn and toxic test paper. But Takayama missed, so the dead became Takayama. And Mihiko is sitting in the position where it is the most guaranteed killing-the least likely to kill the wrong person, so this is very reasonable.

Having said that, there is no evidence at all that Mihiko Fujisaki is the real murderer. Therefore, it is not possible to make a full judgment. Kana searched for a while, but didn't find any useful information. The whole case is deadlocked.

That's when the unexpected happened. Mihiko Fujisaki took Kana to a hidden place in the corridor outside the classroom and said, "Kana Miyazawa, you don't have to look for any more evidence. I admit that I killed Takayama Shihisa. But as she spoke, Mihiko suddenly raised a pistol that came out of nowhere and pointed the muzzle at Kana

Preview of the next chapter: Mihiko Fujisaki, a junior high school student, has an unknown identity?! A shocking case caused by a poisoning