I thought about that too. You'd think Kaoru would want to pass on the Kamiya name, but maybe it's just not that important to her. The sword style could still be called Kamiya Kasshin Ryu even if she took Kenshin's myo though. As for Kenji, in both manga and OVA time line, he's obsessed with Hiten, so it's probably going to be up to Yahiko or any subsequent children KxK might have to carry on Kasshin.

Number one on the list of wrong things about Seisouhen: That it was made in the first place.

Ugh! Cheese is salty enough as it is. I can't imagine eating it in the manner you describe. People must not have known about salt's effects on the blood pressure back then.

What season does the pilgrimage take place in?

Kenshin and Tomoe's nuptials are confusing, aren't they? I almost can't blame the OVA people for having them just fake it. Well, Tsuiokuhen made a few changes, but not nearly as many as SSH.