How did kakuzu die?
Well, Team 7, Naruto, Sai, Sakura, And Yamato Came To Help Fight
Kakuzu And Hidan. Kakuzu, However Did Not See Naruto As A Threat,
This Changed When Naruto Unveiled His Newly Developed Technique,
Wind Release: Rasenshuriken. Then Kakuzu Knew That It Would Be
Dangerous If It Had Hit Him. Kakuzu Had Attempted To Crush Naruto,
And Did, But It Was A Shadow Clone. Kakuzu Then Was Defeated By
What He Called "Kids". Then Kakashi Finished Him Off With The
Lightning Cutter. So That's How Kakuzu Was Killed.