A toner case comprising: a case main body storing a toner; and an agitator rotating around a rotation axis (X) extending along one direction and agitating the toner stored in the case main body , wherein the case main body includes: a cylindrical circumferential wall extending along the one direction; a side wall closing an end portion of the circumferential wall in the one direction; a curve curved in an arc shape around the rotation axis (X) provided at the end portion of the circumferential wall in the one direction; a recess recessed from the curve toward a side remote from the rotation axis (X) provided at the end portion of the circumferential wall in the one direction; and a replenishment port through which the toner is replenished to the case main body , the replenishment port being provided in the side wall so as to overlap with the recess when viewed in the one direction, and the agitator includes: a holding piece provided at an interval from the curve and rotating around the rotation axis (X); and a film held by the holding piece so as to protrude toward an inside of the case main body in the one direction, wherein in a state where the holding piece is in a first rotating position, the film comes into contact with an inner circumferential face of the curve so that the film is in a bent state, and in a state where the holding piece is in a second rotating position, the film is inserted into the recess . a case main body storing a toner; and an agitator rotating around a rotation axis (X) extending along one direction and agitating the toner stored in the case main body , wherein the case main body includes: a cylindrical circumferential wall extending along the one direction; a side wall closing an end portion of the circumferential wall in the one direction; a curve curved in an arc shape around the rotation axis (X) provided at the end portion of the circumferential wall in the one direction; a recess recessed from the curve toward a side remote from the rotation axis (X) provided at the end portion of the circumferential wall in the one direction; and a replenishment port through which the toner is replenished to the case main body , the replenishment port being provided in the side wall so as to overlap with the recess when viewed in the one direction, and the agitator includes: a holding piece provided at an interval from the curve and rotating around the rotation axis (X); and a film held by the holding piece so as to protrude toward an inside of the case main body in the one direction, wherein in a state where the holding piece is in a first rotating position, the film comes into contact with an inner circumferential face of the curve so that the film is in a bent state, and in a state where the holding piece is in a second rotating position, the film is inserted into the recess . a holding piece provided at an interval from the curve and rotating around the rotation axis (X); and a film held by the holding piece so as to protrude toward an inside of the case main body in the one direction, wherein in a state where the holding piece is in a first rotating position, the film comes into contact with an inner circumferential face of the curve so that the film is in a bent state, and in a state where the holding piece is in a second rotating position, the film is inserted into the recess . <EOS>