Osu! We are proud to announce our up and coming spring event: Aikiken and Aikido Seminar with Joe Thambu Shihan, 8th Dan Aikido. This Seminar is open to any style of Aikido and other Martial Arts as well. Rather than learning to “fight” with swords, the primary purpose of aiki-ken is to magnify errors in one’s aikido technique, and to give the student an opportunity to apply the principles of aikido in different situations. Aiki-ken is practiced using bokken (a wooden katana) and has a wide variety of techniques.