A Salty Life Starting as a Slave

He was coaxed into jumping into the river by the system, even though he had already agreed to travel through time and enjoy the life of a noble lady and a carefree life. She is indeed the eldest daughter of a noble family, and a family of first-class officials. It was just that they were confiscated because of rebellion~ Life in a different world begins in a prison car. (PS: There is no male protagonist, it is not a female channel, don't ask)