The invention provides a printing apparatus, a medium, and a non-transitory storage medium storing instructions. The medium includes a transparent base layer and a separation layer stacked on each other. In the medium along a first direction orthogonal to the stacking direction, a first region in which a portion of the medium which is in contact with the separation layer is stickable, a second region which is located on one side of the first region in the first direction and in which a portion of the medium which is in contact with the separation layer is non-stickable, and a third region which is located on the one side of the second region in the first direction and in which at least a part of a portion of the medium which is in contact with the separation layer is stickable, are defined. The medium comprises a print mark on a portion of the medium in one of the first region and a first-region-side portion of the second region. A center of the first-region-side portion of the secondregion is nearer to the first region than a center of the second region in the first direction. The invention can prevent misalignment and skew in attachment of the medium to a wrapped member.