NA Localization:
Arthur.
It's said that in ancient times, this name used to mean "bear."
A bear is the king of the forest. A huge and vicious beast.
Few can withstand a swipe from its paws.
Thus you, tiny girl in silver armor, who rides on the back of Dun Stallion, the famous steed...
You are such a pretty little Arthur...
Was there anyone in the past who smiled and thought that in the past?
I see. You were indeed Arthur.
Little girl, you are a king, a huge beast, and also a dragon who none can equal.
Thus on the back of the famous steed rides a dragon.
What an honor!
Behold, the steed neighs in excitement.
King who was once a girl, give your order!
Even if it's the end of the world,
Dun Stallion will conquer it!
Fan Translation:
Arthur.
The name used to mean bear in old days.
Speaking of bears, the king of the forest, the fierce beast. From the terrible power
A mysterious creature that can endure a blow that is delivered, is not it.
If so, you ride on the back of the maid Dun Stallion,
Small girls wearing silver-colored armor.
What a lovely bear (Arthur) ─ ─ ─
etc,
Would anyone who thinks awfully be in the past?
It certainly was you Arthur.
A little girl, you are a king and a big beast, and
It was a dragon without anything that lined up.
In other words, the Famous Horse put a dragon on his back.
What honor!
Behold, The famed horse gets excited right now with a cheek.
Oh, the king who was once a girl, command!
Even the ends of the world, Dun Stallion will conquer!