Two in one: story of the ice witch

Yuki finds herself along with another girl, Kori in the harry potter universe in the same body the body of the spirit of ice, snow, and water. The four elemental spirits were created by chaos and everything was going along smoothly until someone's death causes the two in one pair to fall out of touch with the other spirits until the birth of the chosen one brings them back on the right path. Will they overcome the challenges that the world has to offer. Who is Kori why can she not remember much? Why was Yuki chosen to come to this world? And who exactly is Chaos? ///////////////////////////////////////////////////// this is my first time writing so I would like some feedback on how to improve things and if you have any ideas on how I should move forward on the plot please give me your ideas if the creator of the art above wants it taken down then tell me in the comments and I will