Check out this great video. It shows some of the special and unique aspects of studying a koryu art such as Muso Jikiden Eishin Ryu iaido. Note that I am not part of this specific dojo but we are related in the system. Please check out the other content from Q2 Japan on Youtube.
The kanchō (dojo leader), Jon Andresen, holds a Renshi (練士, instructor license) Nanadan (7th dan) rank in MJER iaidō
Iaidō (居合道) is a Japanese martial art that is concerned with relationships between people with an emphasis on being aware and capable of quickly drawing the sword in response to a sudden attack.