Akai Shuichi: "..." This was obviously not good for him—what normal person went out of their way to conceal their own fingerprints?
Fortunately, there was more than one flaw he could use to refute the accusation.
Akai Shuichi's thoughts raced as he raised a hand and pointed at Hattori Heiji. "If my coin was contaminated with Cyanide, then this student's fingers..."
He stopped halfway through.
—After he had handed over that coin, it had come into contact with only three things: his fingers, Hattori Heiji's gloves, and the killer's hood.
The killer's hood contained Cyanide; that went without saying. So if he wanted to prove his innocence, he had to start with the other two.
Akai Shuichi had originally not wanted to expose the coating he used to conceal his fingerprints, so he had intended to have the police examine Hattori Heiji's gloves.
But he suddenly realized that Hattori Heiji had handled the coin twice: once when he took the clean coin and tossed it into the hood, and once when he took out the coin that had been contaminated with Cyanide... In other words, after the second step, Hattori Heiji's gloves were now contaminated with Cyanide too.
...That left only one way to prove his innocence: testing the substance on his fingertips. And that would inevitably expose the coating on his fingers.
Akai Shuichi: "..."
To anyone watching, his earlier act of lending out the coin had merely been helping the Detective complete the final steps of solving the case—after all, everyone knew that at this point, the killer was supposed to confess and then be taken away by the police.
But now...
At that thought, the way Akai Shuichi looked at the painter changed slightly. He had thought this Uzo lackey was merely unwilling to accept a failed