I recently worked with illustrator Tessa Schlechtriem on a (short!) experiment in storytelling. We wanted to explore a no-click interaction, and see if we could make a narrative respond to the viewer.
http://tessascape.com/world/2017/war-worlds

The old SightlineVR demo/experience "The Chair" from the Oculus DK2 era had an interaction mechanism that we really liked where you interacted with the scene just by looking around, and we wanted to try our hand at similar experience in an illustrated panorama world. The result is a short panoramic narrative, which is not as linear as video (but still linear overall).

The demo, based on Tessa's illustrated work, is responsive to the viewer's gaze. It contains animated sequences without relying on a fixed timeline. It should work fairly well for both VR and non-VR viewing.