Aiki (martial arts principle) and its practice is often kept within a particular individual or two from a family/school lineage. Culturally, and due to certain necessities of the time period, the aiki knowledge was usually a very well guarded secret and rarely disclosed. The oldest book to have historically discuss aiki was the 1899 Budo Hiketsu-Aiki no Jutsu. On the subject of aiki it was written: The Textbook of Jujutsu (Jujutsu Kyoju-sho Ryu no Maki) from 1913 wrote: Aiki (martial arts principle) Aiki from a Japanese budo term, at its most basic is a principle that allows a conditioned practitioner to negate or redirect
Black company (Japanese term) Black company (Japanese term) A , also referred to in English as a black corporation or black business, is a Japanese term for an exploitative sweatshop-type employment system. While the term "sweatshop" is associated with manufacturing, and the garment trade in particular, in Japan black companies are not necessarily associated with the clothing industry, but more often with office work. The term "black company" was coined in the early 2000s by young IT workers, but has since come to be applied to various industries. While specifics may vary from workplace to workplace and company to company, a typical practice at