Yubitsume

Man's hand showing yubitsume, with the upper two portions of the little finger having been removed

Yubitsume (指詰め, "finger shortening") or otoshimae is a Japanese ritual to atone for offenses to another, a way to be punished or to show sincere apology and remorse to another, by means of amputating portions of one's own little finger. In modern times, it is primarily performed by the yakuza, one of the most prominent Japanese criminal organizations.[1]

  1. ^ "jivresearch.org".