You're referring to the Japanese title "" (Secret Mission: The Undercover Investigator is Absolutely M Best). I'll provide you with a detailed piece of information about this topic.
: The game follows the story of a 28-year-old protagonist who works as an insurance investigator. He leads a mundane life until he's approached by a female client who asks him to go undercover to investigate a suspicious individual. secret mission sennyuu sousakan wa zettai ni ma best
: "Secret Mission: The Undercover Investigator is Absolutely M Best" is an adult visual novel, which falls under the genre of eroge (erotic game) and bishoujo (beautiful girl) games. The game was developed by the Japanese game developer, Meso, and released on July 23, 2020. You're referring to the Japanese title "" (Secret