i dont believe that Gai and rock lee are the only ones who can open gates. i am currently away from my computer for the week, so i am not 100% sure.. but i seem to recall kakashi opening a gate when he was training to fight zabuza i think. anyone else remember this? he was climbing that rock wall with one hand and then he opened the first gate to make it to the top.. or maybe i'm being an idiot haha.. can anyone verify