Jiang Xia glanced at him. "Why is the direction of the knife tip a far-fetched argument?"
Remembering how he had just turned the situation around with a single remark and led the other two suspects in pressuring the police, the knit cap passenger could not help feeling smug.
"Didn't you hear what I just said?—Because the knife would be hard to pull out after being stabbed into his abdomen, the victim had to stand up and use both hands to pull it out. Once he was standing higher up, the knife would bounce when it fell. In that case, it wouldn't be strange for it to land facing any direction."
The Detective looked somewhat puzzled. "Why would he have to stand up to pull out the knife with both hands?"
The knit cap passenger looked at him as though he were an idiot. "You brat, was your reputation bought by internet shills? Isn't this something you could figure out just by using your brain?—If he didn't stand up, how could his left hand reach the knife?"
"..."
The train car suddenly fell silent.
The other two passengers turned to look at him, both alarmed and confused. "Why couldn't his left hand reach the knife? Was the victim disabled?"
"Of course it was because...!!" The knit cap passenger suddenly came to his senses, and his confident voice gradually became halting. "No, that's not it, I mean..."
Officer Sato's gaze sharpened. "The victim's left hand was cuffed to the horizontal bar on the wall in front of him. If he wanted to pull out the knife with both hands, he really would have needed to stand up—yet only someone who had seen the murder scene could know that. How did you know?"
"I... I deduced it, of course!" Sweat poured down the