i was expecting something or a little bit more about sasuke/ the previous jinnchuriki/ the person in coffin actually.. but it's ok. Thanks to kishi that comes up with a little bit more about the 3rd raikage.. He is fckin beast. Almost god like.
i think the reason that kumo guy ask all earth user to build a wall is just to slow him (that beast of lightning bruce lee speed + chuck norris power : 3rd raikage) down so the other ninja's can run away from him.