One of the most famous folk story from Java (Indonesia) describe legendary kris blacksmith, called Mpu Gandring, and his impatient customer, Ken Arok, who eventually stabbed him to death, because the old blacksmith kept delaying the scheduled due date of kris, which Ken Arok ordered probably several months before.
Kris is trademark accessories of Javanese aristocrats.
Several kris are considered sacred, and people believe they contain magical powers; thus specific rites need to be completed, if they do not want to get its consequences.