A yokai famed as an invisible wall that blocks travelers on night roads. People suddenly find they can’t move forward, their hands meeting a flat, unyielding surface. The spell is said to break if one waits, sidesteps, or taps the ground with a cane. Its form is unfixed—often described as unseen or like a featureless wall. It rarely harms beyond causing confusion, feared mainly as a nuisance that makes people lose their way.