As the shuriken cut the string that was holding Dango up, the three Genin could hear something break in the underbrush, something that sounded an awful lot like metal string tied to something being released. Then they could hear the whistling of kunai flying through the air towards them. Jerin watched from right above them, judging their reaction times and waiting for the right moment to use his genjutsu on the group. He had no doubt that Nagato would catch on quickly, he had a rough idea of what Jerin could do, but he only needed a split second to put them off balance and split them up. If he did it right, they wouldn't catch on until too late.