This video is of Yanazo, from the 2012 Japan Juggling Festival. It is a little shaky at the start, but please watch it until the end, as Yanazo’s handling of two balls at the same time is simply astounding.
Apart from the fact that he likes to use a one-word sobriquet and he is amazing, there is apparently not much else on the Internet about Yanazo.
(H/t Rocket News 24)
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It is amazing