A famous set of long and short katana forged by Sadamune of Sagami province. Sadamune learned his sword crafting techniques from the legendary swordsmith Masamune, although he died before his master. Some say Sadamune was actually Masamune's son. His style resembled that of Masamune, and his swords were favoured by warlords during the Warring States period. Like his master, many of his creations bear no inscription.