Naruto: Mission: Protect The Waterfall Village! (novel)

is a fourteen chapter light novel adaptation written by Masatoshi Kusakabe. It is also an OVA anime adaptation of Mission: Protect the Waterfall Village!.

Blurb
"Naruto and the gang return home after a stint protecting Shibuki, the leader of Takigakure. But there's danger back in Konoha. Sasuke and Sakura are quickly captured and the tow-headed ninja-wannabe finds himself in a desperate situation. Turning to Shibuki for help, Naruto discovers the revered leader is actually a coward and false hero. Alone, Naruto must protect his home, his friends and the Takigakure's Hero Water."

Trivia

 * The whole light novel book has an entirely different story, compared to the anime OVA adaption. Examples are:
 * Team Suien (including Suien himself) was revealed to have a large variety of different moves rather than the single one they used in the anime OVA adaption.
 * Senji, an extra character who supports, helps and protects Shibuki and his villagers.
 * Four summoning animals were being used in the light novel adaptation, three giant fishes and Pakkun.
 * Senji fighting against Suien instead of Shibuki.
 * Suien's three Amegakure partners are revealed to be alive (and captured by Kakashi) at the end of the light novel adaptation.
 * Team Suien having faced off against Kakashi until they had been interrupted by Konenmaru.
 * Kakashi's flak jacket was beige in colour.
 * Himatsu and Shizuku's mother was attacked later rather than earlier in the story.
 * Murasame's black sleeveless shirt was ripped in the light novel adaption, but did not happen in the anime's OVA adaption.
 * Shibuki fights against Suien at the near end of the light novel adaption using summoning animals to fight his own.