Mikoshi-nyūdō (見越入道) or Miage-nyūdō is a yokai in Japanese mythology.
Description
Mikoshi-nyudo looks like a large, cross-eyed mendiant usually encountered on mountain passes or on lonely roads at night.
Behavior
Mikoshi-nyuudou grows taller when you look up at him — and the higher you look, the taller he grows. Look up for too long and you will die, goes the legend, but say “mikoshita” (”I see higher”) and he disappears. Mikoshi-nyuudou’s true identity is unknown, but in some areas he is believed to be a shape-shifting weasel, fox or tanuki.