Watch Naruto — Shippuden 207

The Tailed Beast vs. The Tailless Tailed Beast - Narutopedia

: In a desperate move to gain the upper hand, Kisame merges with Samehada, transforming into a shark-like creature and trapping Killer B in a massive dome of water. Watch Naruto Shippuden 207

: Unexpectedly, Samehada takes a liking to the "squid-like" taste of Killer B's chakra and eventually betrays Kisame, attempting to give chakra back to B. The Tailed Beast vs

List the for the rest of the arc. Let me know how you'd like to proceed! Kisame merges with Samehada