But in response to Nanatsuki Koshimizu's words, Shoji Okawahara stood there with a grim face, without making any movement.
"Since you don't want to do it, I'll find someone else."
Seeing Okawahara Shoji standing there like a wooden statue, Tang Ze smiled at him, then looked aside and shouted: "Kushi, come over for the final appraisal."
As Tang Ze spoke, Hisashi Kamii, wearing a forensic uniform and carrying a toolbox, came in front of everyone.
"master..."
Hisashi Kamii looked at the silent Shoji Okawara with a complicated expression, and finally squatted down with a heavy face and opened the toolbox.
He pulled out a small spray bottle and sprayed the withered weeds a few times, then took out a yellow test paper.
When the yellow test paper came into contact with the dead grass sprayed with the reagent, the part that was in contact with the test paper was immediately stained purple.
Seeing the scene in front of him, the expression on Okawara Shoji's face became increasingly gloomy.
"There was a very strong chlorine reaction."
Without looking at Okawara Shoji, Kamii Hisaji said directly, "This situation is basically confirmed to be traces of chlorine-containing detergent being spilled.
At the same time, this is probably why the grass withered in just a few days."
"Speaking of the chlorine-containing detergent found at the crime scene, who is the first suspect?" Tang Ze looked at Okawahara Shoji and asked.
“.......”
Okawara Shoji opened his mouth tremblingly, but no sound came out.
"My first suspicion is whether anyone has used it to remove bloodstains." Okawahara Shoji didn't answer, but Kamii Hisashi, standing beside him, looked at him with a puzzled expression and said in a complicated tone, "Master, this is the knowledge you taught me..."
"Right, so that's pretty much what happened."
Tang Ze said, “You received a police mission that day and quickly arrived at the crime scene.
As a result, when he walked through the grass and put on shoe covers, he found that the soles of his feet were stained with blood.
When you realized the bloodstains in the grass, you immediately went back to search for it.
As an "excellent forensic examiner" in scientific research, you must never make such a low-level mistake as stepping on physical evidence at the scene.
That’s what you were thinking at that moment.”
Tang Ze looked at the silent Okawahara Shoji and continued to deduce what happened that day: "At the beginning, you thought it was just a simple accident.
However, when you see Hisashi Kamii start collecting DNA sample evidence, you realize something is wrong.
Because the deceased had injuries on his body and there was a steel pipe next to him that looked like a murder weapon, the police suspected that it was an accident disguised as a fire.
It is not difficult to imagine how uneasy you felt inside when you knew there was blood outside.
If this case is a homicide, the police will begin a thorough investigation.
Then one's mistakes may be exposed, and if one knowingly makes a mistake but tries to cover up the crime, the situation will be even more serious.
For you, a role model in the forensic department, this is something that absolutely cannot happen.
Just at this time, the DNA test results of the serial killer were found to be that of Kamii Hisashi.
You realized that Kyuji Kamii had also followed you to the crime scene, so you found his DNA tissue and swapped the swab he used to collect evidence."
"If Kuji-kun's DNA is found at this scene, then this case will be tied together with the previous three cases and will be closed soon."
Nanatsuki Koshimizu said coldly: "You must make this case an accident no matter what, so as to avoid the blame.
But actually, Kushi-kun didn't make any mistakes, am I right?"
After listening to Tang Ze's reasoning, Okawahara Shoji could no longer remain silent.
He looked at Kamii Hisashi's eyes which were full of confusion and questioning, but he lowered his head in shame, not daring to look into the other's eyes.
"At first, I just thought that as a forensic officer, I absolutely cannot make mistakes in my work, but..."
Okawahara Shoji's voice cracked: "Because I was in charge of several major cases, I was casually given the title of "Model of the Forensic Department" and was even awarded the title of "Excellent Forensic Officer".
After receiving this honor, I felt that I could not lose face, so I kept demanding strictness of myself.
But it wasn't until the moment I made the mistake that I realized how I had been bound by this reputation.
It was obvious that he had just accidentally stepped on blood far away from the crime scene. All he had to do was call someone and explain the situation.
After all, it was so far away, the place was dark and messy, and it was such a simple thing, but I didn't admit it immediately...
On the contrary, I kept making the same mistakes over and over again, even trying to force my mistakes on my apprentice, so that he would take them with him when he left...
The fact that I destroyed the murder evidence in order to cover up my mistake has been tormenting me these days."
"But in fact, this case is really just an accident." Nanatsuki Koshimizu said from the side.
"How is that possible?" Okawahara Shoji said in disbelief, "What about the bloodstains?"
"The window was open and nearby residents also heard the explosion. The explanation is that the deceased opened the window amid the smoke and caused the flashback."
Tang Ze began to explain, "As for the bloodstains, let Jiusi tell you."
After hearing what Tang Ze said, Kamii Hisashi walked up to Okawara Shoji and took out two photos.
"This was found in the garbage dump at the crime scene, and it's basically the same as the wound on the body's hand."
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