Board Thread:Naruto Discussions/@comment-31278419-20170915213819/@comment-734582-20170926202405

Starscream1998 wrote: (sigh) What could have been had Part 1 Sasuke decided "hey maybe I don't want to throw away all my meaningful character development away and give my body to Evil Michael Jackson." Sadly, mental diseases aren't like physical diseases. You don't just get permanently cured, there are relapses, setbacks etc. In this case, orochimaru used a momentary low in Sasuke's mental health to strike, the same way Obito struck at a crucial moment to recruit Sasuke.

Orochimaru struck hard with the sound Four in order to make Sasuke seem weaker than he was. He was progressing pretty well, and only still a Genin. he couldn't help that his brother was a once-in-a-generation prodigy.