Imouto wa CIA

Inori, an agent of the "Section Z," which handles dangerous missions within the "CIA (Central Intelligence Agency)" that works day and night to maintain the order of the world, receives a special mission. That mission was to infiltrate as a younger sister to guard the genius scientist Hiro... A beautiful younger sister is undercover in this school espionage action!! Link: https://urasunday.com/title/1167