An international fugitive who uses poison has secretly entered the country. The invisible weapon, 'poison,' is creeping closer――… A dangerous woman who manipulates poison, known as a 'perfumer,' has entered the country under the radar—Céline Aljonté. Along with her, several others have also entered, including a former member of the police department. Their intentions remain unclear, but who summoned them……? The invisible weapon, 'poison,' is stealthily approaching the Hiruhira family――…