"Confession" (告白, Kokuhaku) is chapter 437 of the original Naruto manga.
Naruto repeats that Jiraiya would not have condoned Pain's ideas on how to attain world peace. The Deva Path responds that both Naruto and Jiraiya are foolish and that their deaths will create the only peace it is possible to have. When Shima tries to encourage Naruto, the Deva Path pushes her away. Before it can take Naruto away, Hinata attacks the Deva Path. Naruto tells her to run since she can't win. Hinata knows this, but says that after watching Naruto for so long and wishing to be with him, she can't help but want to protect him now. She tells Naruto that she loves him. Before he had time to even process what she had said, Hinata attacks the Deva Path but is quickly struck down and apparently killed. Enraged by the "murder" that was witnessed first-hand, Naruto breaks free of his restraints and enters a six-tailed form.