A toner case includes a case main body, a supplying port, a collecting port, a supplying shutter, and a collecting shutter. The supplying shutter opens the supplying port in accordance with attachment of the case main body to a supplying attachment part, closes the supplying port in accordance with detachment of the case main body from the supplying attachment part, and closes the supplying port in a state that the case main body is attached to a collecting attachment part. The collecting shutter opens the collecting port in accordance with attachment of the case main body to the collecting attachment part, closes the collecting port in accordance with detachment of the case main body from the collecting attachment part, and closes the collecting port in a state that the case main body is attached to the supplying attachment part.