Taion's Lightning (Ten's post)

I made a previous post about the mythology behind the tsuba guards and how I want to make a post about it but I have to do a lot of research.

Ten made a short post about 'Taion's Lightning'! It's beautiful...

Link here.

Many people may have read "Taion" as "Koion", but the furigana is "Taion".

'lunar shade'

The front of "Taion" has a design of a five-story pagoda and a red moon like those in Kyoto.

You can see the back side by viewing the model of the tsuba.

This is a famous poem by Fujiwara no Michinaga.

"I think of this world as my own, as if the full moon were never cresting."

This was once interpreted as Michinaga's arrogance, as if he had made this world his own, but

"I am content with this world tonight. Though the moon before me is waning, my moon - the one I shared with my queen and all the people at the banquet - is not waning."

Recent studies seem to suggest this is the case.

There's a poem on the back of the guard!

「此の世をばわが世とぞ思ふ望月のかけたることのなしと思へば」

[この世をばわが世とぞ思ふ望月の欠けたることもなしと思へば]

Cursed Soh kills Yoshiro always with Taion's Lightning.

I wonder if there's some kind of implication?

This is one of my favorite tsuba guards because of the design.

I thought it was a sun...and yet it's a red moon!

Soh is frequently associated with the moon.

That's a full moon!

Is there an implication of Cursed Soh killing Yoshiro with the tsuba guard that has such a poem on it?

More translations:

X: This world / belongs to me— / lacking in / nothing like the / full moon.

X: This world, I think, Is indeed my world. / Like the full moon / I shine, / Uncovered by any cloud.

X: The world is my oyster, I lack for nothing like the full moon.

If we consider Soh is the full moon, and the poem is 'I think of this world as my own world. I think of the full moon as never waning' then Cursed Soh antagonizing Yoshiro and wanting to kill her is the Goddess trying to hold onto her own identity(full moon)? 

Or she's now complete, like a full moon, as she presents the merging of Soh and Yoshiro?

Yet the sun is associated with the power of purification...

Further reading on the poem: Wikipedia article