You to teaxh your Rasenshuriken

Naruto and Shisui are standing in a field with Kakashi, "the secret behind creating a new technique unique to yourself would be to change the form of own chakra and then apply your chakra's nature to it. the Rasengan is the perfect example of changing the form of chakra, as the technique literally requires the user to compress and form their chakra into a sphere." Kakashi explains Naruto believes that since he has already accomplished half of the steps, that the rest should be easy. However, Naruto does not know what type of chakra he possesses.

Kakashi explains "there are five elemental natures that most people's chakra falls into - Fire, Wind, Earth, Water, and Lightning." Kakashi decides to show an example to Naruto by explaining the concept behind his Chidori; by forming chakra in the palm of his hand, he applies his lightning nature to that chakra, thus creating a lightning-based technique. Naruto realizes that Sasuke and Shisui must possess two chakra types since he is able to use both fire and lightning-based techniques. Naruto wonders what type he has, and Kakashi decides to find out. Using litmus papers grown from a tree that absorbs chakra, Kakashi gives them to Naruto.

He explains that a lightning nature would cause the paper to wrinkle, while wind would rip it; fire would burn it, water would make it wet, and earth would cause it to crumble. Naruto takes the paper in his hand and closes his eyes as he focuses in chakra into. After opening his eyes, he sees that the paper has torn in two, and Kakashi confirms that Naruto possesses a natural affinity for wind-natured chakra.

Yamato suddenly arrives, and Naruto asks him what chakra affinity he possesses. Yamato showcases his Earth Release: Earth-Style Rampart and his Water Release: Waterfall Basin Technique to create a waterfall, much to Naruto's admiration. He explains that he possesses both Earth and Water-type chakra, and while a ninja who possesses two chakra natures can use one or the other without relative difficulty, combining the two is another story. Kakashi and Yamato explain to Naruto that the latter's Wood Release is a combination of Earth and Water. Kakashi tells Naruto that only those who possess a special Kekkei Genkai are able to combine two nature transformations, such as Shisui who has all but one Kekkei Genkai Nature which is specific to an almost extinct Clan of Shinobi.

Naruto then questions what Yamato is doing there, "I'm here at Kakashi's request" Yamato replies. In order to cut down their training time significantly, Kakashi claims that Naruto must use shadow clones. Since Naruto is able to retain the shadow clone's memories and experiences after dispelling them, creating multiple shadow clones and teaching each one of them would significantly reduce Naruto's training time.

Naruto initially believes that this is Kakashi's secret to his strength, and Naruto creates multiple shadow clones as Kakashi gives them all a leaf, with the task of using their wind-nature chakra to tear the leaf in half. Naruto is astonished to learn that he has managed to cause a slight tear in his leaf, and Kakashi remarks that perhaps Naruto's training would not take as long as he thought, after a few days of training Naruto finally creates the Rasenshuriken which Shisui created.

It's early in the morning and Shisui is at the training field when a crow comes flying at him. Shisui was about to attack it when he sees it caring a message. when the crow lands on Shisui arm he takes the message and reads it.

It's time Shisui meet me at the iron wall in a few days Time, be ready!

-Sasuke.

Shisui walks back home and gets his gear, but before he leaves he writes a message saying he is going to be away for awhile.