Question about JEWEL lyrics

[Pieces_of_SEVEN]

I'm just not quite sure what she's trying to say in the first verse.

Translation from Masa:

Under the grey and square sky
Is filled with all kinds of desires today
But I don't lose sight of the light among them
And can walk, looking forward
Because you always show me
That there remains a purity even in a corner of this city

Translation from Kiwi-musume:

Today, once again, my every craving
Fills the square, grey sky
The reason I can keep walking
Without losing sight of the light

Is because you always taught me
That there are pure things
Left even in the corners of this town

Mainly the first few lines, about desires under the square, grey sky. Just doesn't make sense to me. I'm having a tortoise moment, haha.

What are your thoughts?

xx