Spy Classroom

Spy Classroom (スパイ教室 Supai Kyōshitsu) also known as "Spy Room" is a Japanese multimedia series that spawned from a light novel written by Takemachi.

Synopsis
A world where wars are fought with spies. With a mission success rate of 100%, the remarkable, yet rather difficult to deal with, spy Klaus is being tasked with an almost impossible mission by the agency, harboring an insane 90% chance of failure and death... which for some reason involves seven inexperienced girls?!

Light Novel
Main Article: Spy Classroom (light novel)

Manga
Main Article: Spy Classroom (manga)

Drama CD
Main Article: Spy Classroom (drama CD)

Trivia
As for 7 September 2021, the series total sales reached 500,000 copies in circulation.