The Lindegor Duchy was a family that rivalled the Arangis Duchy among the great nobility of the empire. Willun was the holy city of the Lindegor Duchy.

Willun was located in the northern parts of the empire, which attributed to the still, cold air dispersed throughout the wide city. Castle Witt-Anghel was in the northern sector of the city, and as its name suggested, a huge statue of a white angel was erected in front of the castle. The white angel stood in a proud manner, holding a sword on each hand to guard the castle from any danger. Its head was adorned with a crown made of ash wood.

The angel statue was a symbolic representation of the City of Willun and Castle Witt-Anghel, and the highest point of the statue marked the most secretive and tallest location amongst the many spires located in the city.

It was because the statue was the residence of Seiel, the guardian angel of the Lindegor Duchy. Usually, only the duke and his direct successors could enter the restricted area. Currently, however, a stranger was present in the angel’s abode.

It was a female knight dressed in an armor of silver and white. The armor possessed mysterious, fine curves, just like the unpredictable northern winds. Anyone...