A Night of Rain

is episode 94 of the Naruto: Shippūden anime.

Synopsis
Kabuto entrusts Yūkimaru to Guren. Naruto tries to teach Gamakichi and Gamatatsu how to use Water Style ninjutsu, as Kiba discovers that the enemy may be using bats. Tsunade decides to send out Yamato, Sai and Sakura to assist Kakashi. Yūkimaru falls ill and Guren and him are forced to spend the night in a cabin. In the morning, Guren finds Yūkimaru playing an instrument that his mother gave him. After giving him a crystallised camellia that will never die as long as Guren lives, Guren and Yūkimaru head back out.