Rendezvous with Lords

Three Japanese girls, three friends. Although they have different lifestyles, they were friends since childhood.
One is a intelligent heiress and history teacher. One a street-wise policewoman. One a sweet maid.

After graduating from college, they all decided to to live together in an old traditional Japanese mansion after the heiress' grandfather died.

After three years of living together, three strange men in dapper suits arrive lost and confused.

And why are they uncomfortable with ankles and legs?