Maybe you should just jump into kendo and hope to make the koryu students acquaintance? I'm not sure if there's protocol for approaching a koryu school here in the states, or in Japan (hopefully somebody here can tell you).
Also, just because you didn't see the kata practice that day doesn't mean it isn't valued. Sometimes, I have had to organize kata practice outside regular class time to get the time with kata that I would like. There's so much to practice with kendo, that sometimes there isn't enough time for kata.
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