An information processing system includes an information processing apparatus and an image forming apparatus. The information processing apparatus includes first circuitry to receive a designating operation for executing lamination processing, and transmit image data and designation data indicating that the designation operation for executing lamination processing has been received. The image forming apparatus includes second circuitry to receive the image data and the designation data, form an image on a recording medium based on the image data, and execute, in response to receiving the designation data, the lamination processing on the recording medium on which the image is formed with film.