The Valley of the End (chapter)

Summary
Although Naruto's one-tailed form and Sasuke's level two cursed seal form make them equal matches, the two power sources have negative effects on their respective bodies. Deciding it is time to put an end to the fight and their history together, the two prepare their final attacks. Naruto forms a Rasengan and Sasuke creates his Chidori. The two charge at each other and clash their techniques.