As far as Fang Zheng was concerned, he had no favorable impression of most Hunters in this world.
The reason was simple: these Hunters were far too willful.
Including Kain and Gon, many of them put "whatever I want to do comes first; nothing else matters" above all else. Of course, that alone was not unusual. Plenty of people thought that way. The problem was... after these bastards caused trouble, they would simply dust themselves off and leave, without caring in the slightest how much of a mess they had created.
That was what Fang Zheng could not tolerate.
Fang Zheng was just as reckless, but no matter what he did, he always arranged everything properly. That was one reason why people who worked with him were often speechless at his actions, yet ultimately accepted them obediently. Fang Zheng might be reckless, but he could always settle things. At worst, he left a little cleanup work for others.
However, many people in this world were not like that. They only cared about making themselves happy. Once they were done having fun, that was it. Whatever came afterward was none of their concern.
Kain was like that, and Gon was no different. That was why Fang Zheng especially looked down on people like them. By comparison, Leorio and Kurapika carried responsibilities on their shoulders, so they were actually much more reliable.
As for Killua—there was nothing much to say.
Therefore, when Kain came knocking and asked Fang Zheng to take him to the New Continent, Fang Zheng's first response was to tell him to get lost.
Naturally, Kain was not going to listen obediently. So Fang Zheng said that was fine—if Kain could withstand one punch from him, he would agree to take him along.
Then Fang Zheng casually threw a