A display system includes an irradiator, an imager, an image generator, a projector, a display, and an adjuster. The irradiator irradiates an object with light having a wavelength in an invisible light region. The imager captures an invisible light image based on light excited by the light having the wavelength in the invisible light region, and a visible light image based on light in a visible light region, in the object. The image generator generates a projection image based on the invisible light. The projector projects the projection image onto the object with visible light. The display displays the invisible light image, the visible light image and the projection image in a superimposed manner with each other. The adjuster adjusts the projection image on the display, based on a user operation. The projector projects the projection image adjusted by the adjuster.
