Killer B vs. Kisame!! (キラービーVS鬼鮫!!, Kirābī VS Kisame!!) is chapter 470 of the Naruto manga.
Sakura refutes Naruto's claim that she is lying. Although Naruto points out that she would not come to the Land of Iron just to tell him she loved him, Sakura insists it is true. She encourages Naruto to give up on trying to bring Sasuke back to Konoha for her, but he states that that is no longer his main reason for looking for Sasuke. Sakura leaves without another word. She then starts her own search for Sasuke, unaware that Sai is leaving behind an ink clone. Elsewhere, the battle between Kisame and Killer B starts to heat up. B tries various times to attack Kisame, but Kisame's Samehada absorbs his chakra before any of the attacks can connect.