Heshikiri Hasebe (へし切り長谷部 forceful cutter) is a katana.
Named after a Meitô forged by Hasebe Kunishige, founder of Hasebe school of sword-smithing. Oda Nobunaga owned many famous blades, but he actually used for himself few of them... Heshikiri was such a blade. Nobunaga used it for Te-Uchi against one of his retainers in a tea ceremony. Legend says the man tried to hide behind a cupboard, but Nobunaga killed him with the weight of his blade alone. Such is the reputation of sharpness of this katana.