The ancient samurai ritual of hara-kiri, also known as seppuku, is a symbolic suicide performed in an attempt to regain honour when all hope is otherwise lost. It is a grisly fate, involving plunging a short sword, known as a tantō into one’s stomach, and slicing left to right. An appointed “attendant” would then finish the job by relieving you of your head. Harry Hunt reviews Takashi Miike’s HARA-KIRI: DEATH OF A SAMURAI