Yūkimaru

is a young boy (it is still unknown if he is a shinobi) who appears in the second Naruto Shippūden filler arc. He is a test subject of Orochimaru, because he has the ability to control the Sanbi.

Hunt for the Three-Tails Arc
When Sasuke Uchiha trains, he cuts of tree flowers with his Chidori. After that we can see Yukimaru collecting the flowers. Sasuke tells Yuukimaru to go home and he replies he has no home to go to. Later on Kabuto sets of together with Yuukimaru for a journey. It is unknown where they are heading for.

Trivia

 * Based off appearance, Yūkimaru looks very similar to the Three-Tailed Beast's former Jinchūriki, who was revealed in splash page of chapter 420. They have the same hair and eye colour (purple).
 * Another similarity with to the Three-Tailed Beast's Jinchūriki is their connection to flowers. In the splash page, the Jinchūriki carries a weapon with a flower attached to it, while Yūkimaru first appearance is picking cut flowers.