Akashita

Akashita has no unified origin story in the Edo pictorial record; it appears primarily as an illustrated label in emaki and in Toriyama Sekien’s Gazu Hyakki Yagyō without a textual origin. Scholarly commentators in the 20th century have proposed interpretive etymologies and links — for example, connections to onmyōdō terms such as shakuzetsujin/shakuzetsunichi or moral-aphoristic readings of the name — but these are later, interpretive suggestions rather than original provenance narratives attached to the early pictures.

Across Edo-period emaki and in Sekien’s plate the creature is shown as a beast-like, very hairy face often set within or covered by dark/black clouding, with clawed hands and a wide-open mouth from which a large red tongue hangs (the namesake feature). The full body is generally not shown in the pictorial sources; Sekien’s image uniquely places the head/face figure atop a sluice (floodgate), while other emaki labeled akaguchi show the same facial/tongue motif without a sluice.

The original pictorial sources supply no explicit powers or behaviors. Later Shōwa-era and modern folkloric summaries attribute punitive functions — notably that an akashita/akaguchi appears at floodgates to punish those who steal excessive irrigation water by scooping them up with its large red tongue and swallowing them — and other modern accounts describe evening-sky appearances that kidnap people (some stories add that victims' families later prosper). These behavioral attributions are later interpretations grafted onto the Edo images and are not described in Sekien’s uncaptionsed plate.