D2

(D2_name), middle sister. Her power is full control of water itself, able to change it's physical state. Out of 3 she has biggest power level even after (D1_name) ascended. She is hiding her power because of what she could do if she loses control. While at a very early age there were signs of destruction that she could bring. To prevent that, (placeholder_name_for_king) put a seal so that her power can't reach limit. After his death seal broke awakening power that she has in herself. With this power now that she has she will not stop until she kills Naghat.