Everyone speaks Japanese b\c its a Japanese publication it is a Japanese persons view of a world its just like any other cartoon plenty American movies take place in ancient Rome and blah blah yet they speak english and not Latin for example. And on another note lets not pretend as if almost every anime character doesn't look white or the protagonist has blond hair. Either the Japanese have an obsession with europeans or thast ust their style of art and the different hair colors are more creative and versatile then the avg Japanese persons hair which is black. In conclusion its a japanese production so its a japanese world in language and sometimes in custom everyone Soull Society is not japanese. end.