Kogarasu Maru

The Kogarasu Maru was designed with a curved double-edged blade approximately 62.8 cm long.

A single koshi-hi (腰樋) style groove runs from the tang to the transition point where the blade becomes double-edged, and is invariably accompanied by a soe-hi (添樋).

The hardening process yielded a straight temper line (sugaha hamon, 直刃刃文) on both sides of the blade.

Murata Tsuneyoshi, a General of the Imperial Japanese Army during the Meiji era, created the first Gunto, famously known as Murata-To which is a Kissaki Moroha Zukuri style double edged Katana.

Though rare, Kissaki Moroha Zukuri style Katanas have also been featured in Japanese novels, manga and anime.

Kogarasu Maru and Koshirae
Replica of the tachi Kogarasu Maru , Ozawa Masatoshi, 1970.