Kohga Ninja Star

Koga-ryu ( literally "the Koka School" and originally pronounced Koka-ryu) is a school of ninjutsu. It is one of the most well-known schools of ninjutsu, along with Iga-ryu. It originated from the town of Koka, modern Koka City in Shiga Prefecture. This school of ninjutsu specializes in the use of guerrilla warfare tactics and the use of chemicals, a vestige of which can be seen in the many pharmaceutical companies in modern Koka City. It is not uncommon to see the spelling of Koga as Kohga in modern times.