>>129394
When I think about it I believe I can make more guesses but I am not sure of how well I guess.

*「典」as a set of rules in her contract or
*「使さ」as the personification of being used and serving others or
*「司」as the personification that she in fact is served by others

「典」- I meant a set of rules. Because it feels more like a grand book, a codex.
While in latin you have a libre, you have very serious books like a caudex or a codex that sets something as true. First laws that were true were the natural laws but humans also made them up in justice system and this is where they were written. The bible meaning the book of books in a coloquial sense, codex also means rules in a coloqual sense. But codexes used to explain them at least and reasons for such rules. Tsukasa simply made a contract, that also plays into the theme of the game of a natural anarchist market where only laws of nature apply, where you can sell and buy anything.

「使さ」As a giver of service. The thing that a servant does.
「司」As a receiver of service. The thing that a leader does.
This plays into the fox nature.
And Tsukasa is also a cute common name.

>I imagine Chimata as...

「千亦」meaning a thousand repeats feels more like it is not used specifically for the amount of "redos" but eras and ages I think.
If they meant simply infinite times ZUN probably would pick hyakuman or man but he picked a thousand. Thousand is used more typically in time measuring meaning very long.
「千代に八千代に」"For a thousand of epochs, for eight thousands of epochs" and by epoch I mean the reign of a monarch or whomever who makes history as a pole to which all events and individuals bend. I think it might hold a special place as a time counter instead of a thing counter. A thousand of generations is quite long. Though this is subjective.

(Mihama) Chiyo "thousand of generations". Tiny puny name is so sweet sounding and cute. If feels very optimal for a solid name. I wish I could name someone this well, it keeps a high spirit to be named well rather than some random gibberish.

>But her name uses the sky and heaven character but it means simply nature
It is very cute that the common belief is that heaven is nature and sacred in its perfection.
Emergence of markets is as natural as development of writing record or tools.
It must come from the perfect half of existence! The seedling of perfection on earth sprouts through the natural order!
Yin is feminine, yin is the moon, yin is dark, yin is cold and dead.
The dot in yin is the moon that travels the night sky!
It is the seedling of purity and perfection!
Nobody ages on the moon, no harm is in the moon, land of pure nature and perfection.
Far away, always reminding there is hope in uncertain times and the hope does not fear.

Cat is boring but good looking. General lucky cat characteristics.
And the yamawaro is boring.
And Iizunamaru is boring.
And the smoking lady is boring.

Momoyo "hundred of hundreds of epochs" is the same deal as Chimata. Momoyo is cool.
She has her own legend of coiling a mountain 7 and a half times!
A big insect to be feared. Also probably refering to the 100 legs of a centipede.
"The princess of insects" with insects written as a swarm. Big swarm.
I liked the th18 extra. It was quite fun.