Ep. 2: RIS investiga ameaça de gás venenoso no baile do prefeito em cena de crime encenada

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At a staged Killer B crime scene the RIS find a body killed by a poison gas, which they fear will be released at the mayor's charity gala. While searching the gigantic hotel, the RIS attend undercover and thwart an attack on the mayor. The criminals then take over the building's automation and threaten to release the gas. Lured to the event, Koku follows Izanami to the rooftop.