Abstract: An endoscope according to an embodiment includes a grip unit, an insert unit, a light source, a light exit part provided in the insert unit, a first light guide, a second light guide, and an optical connector disposed in the grip unit. The first light guide has a first entrance end located on the side of the light source and a first exit end located on the side of the optical connector. The second light guide has a second entrance end located on the side of the optical connector and a second exit end located on the side of the light exit part. The light that goes out from the first exit end enters the second entrance end through the optical connector.

Abstract: An image processing system includes a processor, the processor performing processing, based on association information of an association between a biological image captured under a first imaging condition and a biological image captured under a second imaging condition, of outputting a prediction image corresponding to an image in which an object captured in an input image is to be captured under the second imaging condition. The association information is indicative of a trained model obtained through machine learning of a relationship between a first training image captured under the first imaging condition and a second training image captured under the second imaging condition. The processor is capable of outputting a plurality of different kinds of prediction images based on a plurality of trained models and the input image, and performs processing, based on a given condition, of selecting the prediction image to be output among a plurality of prediction images.