Stream anime episodes online for free, Watch The Law of Ueki Episode 21 English version online and free episodes. Anime Episode guide, Chapter The Law of Ueki Episode 21 English dubbed The Law of Seiichiro Sano Ueki is up against none other than Seiichiro Sano, the power user he was trying to save in the jump rope field. But does Sano really want to be saved? Whatever the case, he isn’t cutting Ueki any slack when he goes right into attack mode. With Sano countering every attack Ueki sends his way, our hero is going to have to get creative in order to win this battle. As it turns out, this is what Sano wanted from the beginning. So whose side is our towel user really on? What secret is he hiding from Ueki and his friends?