Y sighed at the man announcing what he claimed to be his name. It was utterly ridiculous. Assuming that Kira was in that room, he wouldn't just kill one guy and give himself away. He'd simply wait until he found out one of the other detectives' name and kill them, and [i]then[/i] kill Z. This wouldn't get them anywhere, other than simply giving up one of the detectives who thinks he's making a bold and smart move.

Though of course, someone so arrogant as Z probably wouldn't risk losing his life over a weak gamble. He most likely hadn't given his real name, which would be even more pointless. This room was supposed to be filled with intellectually superior people but instead, it was just people who thought they were better than everyone else and knew something about deductions, where they broke every rule to solving mysteries with each word.

"I would still like to know how you knew that these were Kira's killings," Y said to the policemen in general. "Some of them could've been accidents. What makes you so certain that they're Kira's work?"

If they were withholding information from the detectives, that wouldn't do. They needed every detail about Kira before continuing their crusade. Even if Kira was one of them, it wouldn't make much of a difference if they didn't know.