Here’s a short, interesting piece on the topic:
Most people assume hara-kiri and seppuku are just two words for the same Japanese ritual suicide. They’re right — and wrong. hara-kiri vs seppuku
So next time you hear “hara-kiri,” remember: it’s not wrong, just informal — like calling a wedding “tying the knot” vs. “getting married.” The act is the same. The dignity is not. Here’s a short, interesting piece on the topic:
One more layer: seppuku was often a highly ritualized ceremony — with a second ( kaishakunin ) to decapitate the samurai at the moment of agony. Hara-kiri in speech might imply a desperate, messy, or dishonorable version without ritual. Here’s a short