I need to find a game with the following descriptions, any help is really welcome, thank you

- About a pair of male-female spies, who are also lovers, infiltrating the mansion of a rich man to investigate documents that prove his corrupted dealings.
- There are about 8 maids working in the mansion, with the fmc being the 9th. The other 8 maids can all be interacted with and once their favor for the mc reach a certain threshold, they will give him clues and help. However, if mc went too far, the rich man would ntr the maid back and mc lose their support.
- Every night a different maid gets called to the rich man's room. MC can freely interrupt the fmc's corruption by banging on the walls and bolt away.
- Good ending is reached when mc get all the documents and the maids and fmc are not too corrupted.
That's all I remember.