@introvertchild that's because Isekai stories are half assed. In a real fantasy you'd actually need permission to separate from your team and do your own thing.
Because if not, they could end up leaving you behind, or you could end up getting hurt and they wouldn't know where you are. It's not really a matter of slavery or being a servant as much as it's a matter of class pres wanting to be responsible and care for people.