IJA Tricks Of The Month December 2017 Japan by: Kotaro December 16, 2017 Hey, I’m Kotaro, Japanese ball juggler. Crazy music and Messy movie. I’m glad you like it. Music: The World of Cluster B IJA Tricks of the MonthThe IJA actively searches out the best juggling talent around the world to make awesome videos for your viewing pleasure. Get ready to be inspired. IJA Tricks of the Month are organized by Jorge Vilchis, Erin Stephens and Lucas Adverse.