Ostania's counterintelligence agency and national security bureau conducts spy hunts and keeps surveillance on its citizens to maintain peace within the country. They are also called the Secret Police and are feared. Yor's younger brother Yuri actually belongs to the Secret Police and is hunting down spies while keeping this a secret from Yor and others around him. One day, he suddenly shows up at the Forger residence. The Forgers, who are full of secrets, and Yuri, who has a secret identity, come face to face!
It's right out of the Ostanian Intelligence
 Agency's manual for the art of deception.
مقتبسة تمامًا من دليل وكالة
.استخبارات أوستانيا لفنّ الخداع
spielt sich ganz nach dem Handbuch
von Ostanias Geheimdienst ab.
proviennent d’un manuel
du service de renseignement d’Ostania.
Arrivano direttamente da uno dei prontuari
 per la creazione di storie dei servizi segreti di Ostania.
...saiu direto do manual da Agência de
Inteligência da Ostânia sobre a arte do engano.
Знакомая.