Samurai
If a samurai was defeated or dishonored himself by not following the code of bushido, he had to commit seppuku (ritual suicide). Part of the seppuku ritual was cutting his stomach or abdomen. That part of the ritual is called hara-kiri. For a samurai, death was better than having no honor or being captured by the enemy. Another reason for committing Seppuku was the death of the daimyo. With that ritual, a samurai showed how loyal he was to his dead master. There were periods in which seppuku was forbidden, but some samurai still committed it.