I think it was a transport to a new world but i could be wrong. the mc wakes up in a body and tries to help a woman. but she turns out to be a dick and mc doesn't like that. she later turns him into a slave. during there convoy back to a city mc is forced to take a poison repeatedly but either god or some mysterious power makes the poison useless to him. the mc is rather pervertic and this was either a cultivation or magic book.