Enso symbolizes absolute enlightenment, strength, the way, the universe, and ku (the void). The graphic on the T-shirt displays the enso circle in red, with the kanji of Budo Ryu Ninjutsu coming out from within. This is very symbolic of the many benefits one gets from the training of Budo Ryu Ninjutsu. The Budo Ryu Kai teaches a martial art called Budo Ryu Ninjutsu, which was developed in 2004 by Soke Anshu Christa Jacobson from her personal research, training and experience. She wanted to bring back the traditional training of authentic ninjusu and classical samurai bujutsu; something that she felt had been lost in the modern world. So she established the Budo Ryu Kai, meaning School of the Warrior Way. Budo Ryu Ninjutsu is Soke Anshu Christa Jacobson's modern approach towards the study of ancient samurai and ninja warfare!