A lever (70) is rotatably mounted on a second lever-side connector (L2) connectable to a mating connector to extend between facing side surfaces. The lever (70) is rotatable substantially along a connecting direction between a connection surface of the second lever-side connector (L2) and a wire drawing surface (H). A correcting portion (71A) of a wire cover (71) mounted to cover the wire drawing surface is formed to rise at a position displaced toward a central part from a base portion (71B), and collects and accommodates wires (W) in the correcting portion (71A).