The kaishakunin’s role was one of profound mercy. His job was not to interrupt the ritual but to end the suffering at the precise, honorable moment. A botched decapitation (requiring a second swing) was a deep shame for the kaishakunin .
By cutting open the abdomen, the samurai was performing two profound acts: seppuku or harakiri
Historically, the ritual was used for several specific reasons: The kaishakunin’s role was one of profound mercy
To protest a lord’s decision or to prove the depth of one's conviction. The Ritual: A Disciplined Departure seppuku or harakiri
For high-ranking members of the samurai class, seppuku was sometimes granted as a form of capital punishment. This allowed the individual to maintain their family's status and inheritance, which would have been forfeited in a common execution.