@OsoJr
I'm like, 50% with you on that, because the other "solutions" people brought up was on the level of: "instead of "hitting", take their stuff." Which isn't all that different in concept.
The other 50%, in which I disagree with you, is solely because Shuu "hit" Chiho not to "teach her a lesson", but to "Project his frustration on to her". He felt like shit, he wanted her to feel like shit. It's a very human thing to do, but if what we're talking about here is "how to teach a kid a lesson", it's rather immature to force your feelings on them to do so (and Shuu is a "kid", so it's fair game, lol). Once you remove yourself out of the equation, a different solution has to pop up.
The most "logical" thing I can think of, is to create a contract with the kid. If they break it, then they get a penalty of some kind. Otherwise, how can they know which rule they broke without it being established? Telling her "don't run by yourself" may not be enough to establish that rule (imagine saying that about "act nice in the restaurant, right...), and it's probably smarter to work on the premise of "What to do", instead of "What NOT to do" ("We talk quietly in the restaurant, etc, we sit near the table and only leave for the restroom before we're done. You agree? etc." <--- That last one I actually quoted from a parent).
And that's all the pretentious ideology I can fart out on the subject, as I never had to deal with kids myself. I came here to see if there'd be a shitstorm, and it didn't disappoint. :v
