Soraki-gaeshi (空木返し)

Name Meaning

Overview

Soraki-gaeshi (空木返し) refers to a strange auditory yokai phenomenon. It literally means "hollow tree echo" or "phantom tree-felling."

• Sora (空) = sky or emptiness
• Ki (木) = tree
• Gaeshi (返し) = return, reversal, or echo

Origin

• Recorded in rural forested regions of Japan, especially in the mountains.
• Appears in oral traditions as a warning or unsettling sign from the spirit world.
• Sometimes linked to restless forest spirits or angry kodama.

Appearance

• This phenomenon has no visible form—only the sound is experienced.
• Witnesses describe the sound of heavy axes striking wood, trees crashing down.
• When investigated, no signs of tree damage are found.

Behavior & Myths

• Considered an omen, sometimes foretelling misfortune or spiritual unrest.
• May be attributed to invisible yokai disturbed by humans or disrespect of nature.
• Some believe it is a test of reverence for the forest gods or spirits.

Symbolism

• Symbolizes unseen forces of nature and the spiritual essence of forests.
• Represents the mysterious and the unexplained in daily life.
• Acts as a reminder to respect and not desecrate sacred woodland areas.