The blog image for this post is the Japanese kanji for 'Fudoshin' and this example was written by Yasumoto Soke.
It means imperturbability, steadfastness. The usual translation is keeping a cool head in an emergency, or keeping calm (e.g. during a fight).
Within Motoha Yoshin Ryu JuJutsu, the Japanese do not use a coloured belt system or perform gradings until Shodan (Beginner Dan, often referred to as 1st Dan). Those training start wearing a white belt and transition directly to black if they pass the grading.
The concept of coloured belts and gradings before black belt level is generally a western, modern addition to many martial arts, with each style often having its own different choice of colours and progression between these.
Something which has come up during sessions a few times are the actual terms and words for parts of the katana, or when training, the bokuto (bokken is a Kendo term, bokuto means wooden sword).
This image shows the different parts of a katana and their names:
