NA Localization:
She was once called the Holy Maiden of Winter. After being kept in an ancient castle on a snowy mountain for an eternity since she was minted, her mind, her transient soul, and even her memory circuits have all been worn down to near oblivion. Now, having become the foundation for a great feat, she lives the same unchanging day over and over.
For those on the outside, she seems to be a beautiful device. For those obsessed, she seems to be the picture of regret inscribed on days of old. And for the other girls, she seems like the ultimate glory to strive for.
But that is all long in the past now. Here, within this perfect world, the saint dozes in peace, so that she may better embrace the many ideals she was never able to fulfill.
Fan Translation:
Once, she was called the Saintess of the Winter.
It's been long, so long, since she was produced and kept in the old castle in the snowy mountain, her mind, her transient soul, and even her memory circuit has all worn out, before long, she continued to live in "unchanging days", and finally, she became the foundation of a great achievement.
From the outsiders' point of view, she was a beautiful device.
From the obsesseds' point of view, she was the regret engraved into their old days.
From the girls' point of view, she was the supreme glory to themselves.
At the present, she is just a distant tale.
The Saintess falls asleep within a perfect world.
So that she could embrace and keep the many unfulfilled ideals within her arms.