kōshin-machi; all-night vigil on the eve of Kōshin day
A historical Buddhist practice of staying awake all night on the eve of the 57th day of the sexagenary cycle to prevent the three worms (三尸) from reporting one's sins to the gods. Originated among Heian nobility and became widespread in the Edo period.
See also: 三尸
庚申待は、平安時代の貴族の間で始まった風習だ。
Kōshin-machi is a custom that began among the nobility of the Heian period.
During the Edo period, kōshin-machi spread among the common people as well.