PROBLEM TO BE SOLVED: To provide a head-up display system and a mobile body having diversified display contents. SOLUTION: The head-up display system 1 projects a first image, a first projection module 2 configured so that the first image is displayed in a forward direction that does not face the user, and a second image. 2 The second projection module 3 configured to display the image in the forward direction facing the user, and the reflecting optical element 4 configured to reflect the first image and the second image at least partially. And. [Selection diagram] Fig. 1
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