They hadn't thought of communicating like that? It's the most basic you can get. People use that to try to communicate with animals IRL all the time.
Pretty much all kids are good, given a chance. Kids become bad almost entirely because of adults.
Now im kinda interested in the reality of kids in the slums. Are they actually more intelligent or something alike maturity because of the harshness within the slums or are they not that different from normal kids (or at least me) who is basically brainless retard until... 12? maybe even until 15 idk. Im a late bloomer tho.
Depends on what you mean by "brainless retard". I mean, kids do dumb stuff for as long as they remain kids, and often way into adulthood.
I forgot how old Kikka was, but the other two are at least old enough to have conversations with. And yeah, kids in harsh environments grow up faster, since they have to learn how to think on their own. Well, in some ways. In others they fall behind.