What is Atobori(後彫り)? Atobori refers to carvings added later to the sword in order to hide defects in a decorative way. More than one-third of existent sword carvings are said to be Atobori.


What is Midare(乱れ)? Midare refers to a curvy HAMON(刃文) being not well-arranged and having parts of different shapes or sizes. O(large) or Ko(small) is often used to describe the degree of Midare. [...]


What is Torokusho? Torokusho is a license or a registration card of the Japanese sword and matchlock. In Japan, anyone can possess a Japanese sword and matchlock without any permission but the [...]


What is Utsushi(写し)? Utsuhshi refers to recreate a copy of the existing sword with the aim of analyzing the techniques used. Almost all the modern swords can be classified as an Utsushi ranging [...]


What is YOROI-DOSHI(鎧通し)? Yoroi-Doshi refers to an extra thick TANTO (短刀). It was developed in the SENGOKU PERIOD(戦国時代). Since the Yoroi-Doshi is designed for piercing armor and for stabbing, the [...]


What is SASAHO-YARI(笹穂槍)? Sasaho-Yari refers to a Japanese spear which has a bamboo leaf-shaped blade. The average blade length is about 30cm and the blade cross-section is triangle or rhombus.


What is Sumigomori(炭籠り)? Sumigomori, which literally means “Charcoal Left Inside”, refers to the tiny hole or hollow in the blade. The hole is a mark of a fragment of charcoal and [...]


Gokaden means the regional characteristics of the Japanese sword produced during the Koto period(900 to 1596) in 5 major regions; Bizen, Mino, Soshu, Yamashiro, and Yamato province. These [...]


What is Tagane-Makura(鏨枕)? A Tagane-Makura refers to the rim of the signature, which is made when a swordsmith inscribed his signature in the NAKAGO(茎) with the chisel called Tagane(鏨). This is [...]


YASUKUNI-TO(靖国刀) refers to the swords made by the swordsmiths of Nihonto Tanren Kai (Japanese Sword Forging Association). Region Tokyo metropolis Active 1933-1945 Famous Swordsmiths Yasuaki(靖要) [...]