After the premiere of Iron Fist a promotional website was released on 23 March, 2017. This in-universe website is a introduction page for the Chikara Dojo. The website also contains a promotional video to learn Kenjutsu at the Dojo.
Learn Kenjutsu - The Wing Way!
In this video, Chikara Dojo offers training in Kenjutsu in New York City.