If you’ve read Kitsune-Mochi, you might remember a scene where Murame hears footsteps trailing her down a mountain? That’s the beto-beto-san, named onomatopoeiatically for the beto-beto sound of walking in wooden geta on stone.
Just remember, the beto-beto-san is a mischievous prankster but generally not dangerous, and as with so many Japanese youkai you can get safely away by being polite. Take care and mind your manners!
Also published on Medium.