Originally Posted by Vengeance
Compared to Neji Sai holds more relevance at this point. He's Naruto teammate & actually tolled Sakura about herself. He acted as the voice of logical reason between the team when it came to Sasuke. He's also been allot more useful & proactive in the war when compared to random shinobi Neji.
While that is true, Kishimoto never managed to convince me, the reader, that Sai was ever important. I always viewed him as a material that wasn't needed in the manga, and the writer never managed to make my belief different. Actually, Taka, Yamato and Sai are the only characters that I never invested a dent of thought into. Maybe only Juugo, but that was a long time ago. I know that Yamato is important being the Hashirama clone, but I still never got any care for him.