Apparently Artemis wasn't budging on this one. What Haku was suggesting was insane. How could he not go find him and at least attempt to undo the brainwashing? After all, he and Zabuza probably had the best chance of doing it correctly.
"Well, there's only one thing to do then," Artemis sighed heavily. "I'll simply have to find a method of reversing the brainwashing before they get to you."
Re: M47
"Well, there's only one thing to do then," Artemis sighed heavily. "I'll simply have to find a method of reversing the brainwashing before they get to you."