Plot_Naruto_I
naruto VS Sasuke
Naruto caught up with Sasuke and they began battling. Sasuke's Cursed Seal of Heaven, which had been powered up by a pill given to him by the Sound Four (this was why he was in the coffin), gave Sasuke inhuman strength, which he used to reduce Naruto to almost rag-doll levels. Meanwhile, Sasuke recalled his experiences with Itachi and his parents up to the point of the Uchiha Clan Massacre. It was in these memories that the Mangekyō Sharingan, and how Itachi obtained it (by killing his best friend, Shisui Uchiha) was revealed; it was also revealed that Itachi had encouraged Sasuke to gain the Mangekyō Sharingan, which he claimed to be the only way he could exact revenge on Itachi, by any means necessary, and this became Sasuke's motivation for killing Naruto, who he claimed to be his best friend. Back in Konoha, Kakashi Hatake, brought up to speed on the situation, summoned his ninken to track down Naruto and Sasuke, including Pakkun. Meanwhile, Naruto and Sasuke unleashed the Rasengan and Chidori respectively, causing each other to fly backwards. Activating his Cursed Seal, Sasuke used his enhanced speed and strength to overcome Naruto and strike him with a Chidori. Naruto managed to block the attack, but Sasuke, still intent on killing Naruto, tried to strangle Naruto, only to have himself thrown aside by a Nine-Tails-powered opponent. With his enhanced abilities, Naruto easily overwhelmed Sasuke, and tried to reason with him, only to have Sasuke ultimately reject his efforts, although Sasuke finally admitted they were fighting as equals. In this moment, Sasuke's Sharingan finally matured, enabling him to predict Naruto's movements and once again turn the tables. Upset by Naruto's persistence, Sasuke knocked him unconscious with Peregrine Falcon Drop. The Nine-Tails, probably to save itself, gave Naruto even more of its chakra, creating, for the first time, Naruto enters his one-tailed transformation, complete with the demon fox cloak that surrounds him. With one arm of the cloak, Naruto unleashed powerful short and long-range attacks, which Sasuke, even with his Sharingan, was unable to keep up with. Feeling he had no choice, Sasuke increased his Cursed Seal of Heaven to Level Two, once again evening the playing field. Both Sasuke and Naruto realized the cost of their respective abilities at that point, but both decided that they had no other choice. Sasuke revealed that the location of their fight was the Valley of the End, and, determined to end the battle, forced the use of a third Chidori. Naruto created, using one hand, and the demon fox cloak's chakra as a shell, the Demon Fox Rasengan. Sasuke's Chidori, after a moment, warped into the Flapping Chidori. The two ninja collided their attacks; Sasuke, planning to punch Naruto in the heart, deliberately missed, and targeted the gut instead, while Naruto, referring to one of Sasuke's insults, scratched his headband. A black dome of energy formed around them, which eventually dissipated, revealing the two ninja as their current forms, and then as their childish forms, who held hands and smiled at each other. When the dust settled, Sasuke was revealed to be victorious. Sasuke pondered whether or not to kill an unconscious Naruto, but decided to leave him alive in the end. Kakashi and Pakkun arrived; disappointed they were too late, Kakashi took Naruto back to Konoha. At the same time, Sasuke decided to gain the power to kill Itachi his own way, through Orochimaru, as he walked off to Otogakure. It was then revealed that Akatsuki member, Zetsu, had been watching the fight the whole time.