Let's talk about some important things in this episode.
It begins with a flashback. Young Killua meets Canary and tries to befriend her. It's clear that she wants to do so, but she has to decline at the imposition of her employer. Kikyo is from Meteor City too--it's something that hasn't been revealed in the manga, but was written in the guidebook.
So the reason why Canary slipped last episode should make a bit more sense. She wasn't just touched by Gon's determination, but he represented something that she cannot be: friends with Killua. Even if she wants to, it's one of the most taboo things in the Zoldyck household. Because of the nature of her job and their own. Canary didn't cry out of sadness--she cried because she was
touched. Touched that someone would love Killua enough to break him free from this perverted family. To try and make a change through force if he had to.
I really liked how abruptly the flashback ended, with Killua remembering Gon's face (asking to be friends). It implies that it's the only thing keeping him going. This is what he wants most in life and he's being deprived of it.
Now that you've met most of the Zoldyck family, it should be clear just how twisted they are. Killua described himself as a bit of a liar; he must get it from his mother. Kikyo lies all of the time in this episode in order to protect what she wants. But despite how strange they are, there's something unexpected holding them together: love. A strange, distorted love.
Despite Killua being flogged and tortured for weeks, he doesn't think any less of his family for having done it. In fact,
he lets it go. He's had his body violated for so long and he thinks that there's nothing wrong with that. It's extremely sad, but that IS what's considered to be "normal" in his own household. Milluki might have perpetrated this, but he still has good things to say about Killua. It's...something else. Killua was lying to Gon when he said that his ultimate goal is to "capture his family." He actually really cares for them. But he wants to live his life without being oppressed.
Killua's conversation with his father Silva is the highlight of the episode and the most important part of it. The two make an oath in blood: Killua will never betray his friends. Given how badly that Killua wants this, start to pay attention to the lengths Killua will go to keep that promise. We've already seen one way: Killua threatened to kill
his own brother if he harmed them.
