When the criminals grow suspicious because they don't hear typical "newlywed" sounds at night, Noma and Riko must stage intimate encounters to maintain their cover. The series focuses on Riko's struggle to balance her sense of justice with the humiliation and physical pleasure she experiences during these undercover "duties". Key Characters
In the sprawling ecosystem of Japanese web novels and light novels, a particular sub-genre has captured the imaginations of readers who crave high-stakes espionage blended with unshakable protagonist confidence. The hypothetical (or yet-to-be-officially-translated) series known colloquially as “Secret Mission: Sennyuu Sousakan wa Zettai ni Makenai” — “The Undercover Investigator Absolutely Will Not Lose” — embodies everything fans love about this niche. secret mission sennyuu sousakan wa zettai ni ma best
: The show focuses on themes of undercover operations, blackmail, and romance, often leaning into the "ecchi" or adult genre depending on the version viewed. The Movie Database Where to Watch The series originally aired on When the criminals grow suspicious because they don't
Voiced by Jun Osuka (On-air) / Jun Shita (Premium). : The senior agent voiced by Sahomi Koyama
: The senior agent voiced by Sahomi Koyama . She is committed to her sense of justice but finds herself increasingly conflicted by the intimate demands of her mission.
When the criminals grow suspicious because they don't hear typical "newlywed" sounds at night, Noma and Riko must stage intimate encounters to maintain their cover. The series focuses on Riko's struggle to balance her sense of justice with the humiliation and physical pleasure she experiences during these undercover "duties". Key Characters
In the sprawling ecosystem of Japanese web novels and light novels, a particular sub-genre has captured the imaginations of readers who crave high-stakes espionage blended with unshakable protagonist confidence. The hypothetical (or yet-to-be-officially-translated) series known colloquially as “Secret Mission: Sennyuu Sousakan wa Zettai ni Makenai” — “The Undercover Investigator Absolutely Will Not Lose” — embodies everything fans love about this niche.
: The show focuses on themes of undercover operations, blackmail, and romance, often leaning into the "ecchi" or adult genre depending on the version viewed. The Movie Database Where to Watch The series originally aired on
Voiced by Jun Osuka (On-air) / Jun Shita (Premium).
: The senior agent voiced by Sahomi Koyama . She is committed to her sense of justice but finds herself increasingly conflicted by the intimate demands of her mission.