Yamatoyo no Momohime

Yamatoyo no Momohime is the final boss of the Touhou Project fangame, Riverbed Soul Saver. She's the daughter of a legendary queen who was put into cryogenic sleep fueled by Demonic Artes in the Shangri-La Palace for her protection.

When the Royal Family's enemies attacked, she was free from harm, but the invasion made the Palace sink into the deepest waters, with the princess trapped in it, but as long as she remained inside it, she could not die. When Yukari's border powers opened a way to a new dimension to keep youkai at bay, something she had not contemplated happened: The cold air from the palace's chamber escaped through this gap, causing a cold front to enter Gensokyo.