He defected after failing to take Itachi Uchiha's Sharingan eyes. He branded Sasuke Uchiha (Itachi Uchiha's younger brother) with the Cursed Seal of Heaven in hopes of him coming to Orochimaru to find more power. He did this, and after 2 and 1/2 years of training Sasuke and Sasuke's Sharingan with Orochimaru, he prepared to steal Sasuke's body into his own so Orochimaru would have the Sharingan. He devoured Sasuke, but Sasuke's will eroded Orochimaru's jutsu (Living Corpse Reincarnation) and made Sasuke absorb Orochimaru into his body, thus backfiring the jutsu.
When Orochimaru was transforming, Sasuke enters the room and tried to kill him. Orochimaru is in Sasuke, but Sasuke took over Orchimaru so Sasuke has full control of his own body. During Itachi's final battle, Itachi finds that Orochimaru is still alive in Sasuke, so Itachi drove Orochimaru out and kills him. Part of Orochimaru is in Kabuto after Sasuke and Orochimaru's fight, so Orochimaru might not be dead, but Orochimaru is mainly killed by Sasuke. The answers you find here are all found from the manga we read.
Hmm... how should I answer this question? Simply put, Orochimaru was not killed by Itachi, but by Sasuke. Sasuke killed Orochimaru in Orochimaru's weakest condition, knowing that Orochimaru had no more power to grant him.
no, but orochimaru does.......
Sasuke Uchiha has the 'Sharingan' ability, an asset that Orochimaru would find very useful. Also, Sasuke is a very powerful Ninja, already adept at Taijutsu, Genjutsu and Ninjutsu. Orochimaru has already managed to put a curse upon Sasuke, which lends Sasuke a portion of Orochimaru's power at certain points. Orochimaru believes that by lending him such power, Sasuke will hunt for more, eventually leading him to find Orochimaru. Another reason is that Orochimaru eventually wants to take over Sasuke's Body because he is so powerfull. once Sasuke kills Itachi, Orochimaru Plans to inhabit Sasuke's soul.
yup sasuke marries sakura (sasuke kills orochimaru) and naruto marries hinata
he didn't Sasuke killed Orochimaru himself ,well sort of.
Yes, Naruto eventually convinces Sasuke to leave Orochimaru and return to the village. Sasuke ultimately breaks free from Orochimaru's control and seeks to redeem himself for his past actions.
Orchimaru
Sasuke is using Orochimaru to get stronger to take revenge on his brother itachi. Later Sasuke ends up killing Orochimaru and its because Sasuke thinks he can kill itachi alone without being Orochimaru's Container (host). So he never had any feelings for Orochimaru at all.
Warning spoiler: Orochimaru dies from sasuke uchiha
orochimaru wanted to be in sasuke's body because he saw that sasuke had great power, but sasuke took advantage of the fact that orochimaru was weak and decided to fight him. sasuke defeated him and ran away to go look for itachi and kill him......