This is the final Boss for the Kingdom of Rem Boreas.
The Ice Queen's story is known in the game as The Tale of Rem Boreas, the legend of The Ice Queen. Long ago, the Ice Queen was once a mother whose children died because of the Eld Witch's dark magic. When she lost her kids the Ice Queen wandered the Snowfields in pain over her loss. But Queen Alice soothed her pain and the Ice Queen became Princess Hansel's servant.
When the Witch's curse spread into Rem Boreas, it made the Ice Queen change the shape of the land and freeze Princess Hansel in a large chunk of ice; similar in shape to a crystal.
Idol description- A poor mother, grieving over the loss of her children. She wanders alone on a cold and lonely path as her pain whirls inside her like a blizzard.