Just thought of this now holy shit asdfghjkl
Headcanon: Sora Hanasaki was a upcoming celloist and as his big concert approached he became very nervous. Despite the comfort and motivation he received from his wife, he was still very uneasy. On the night of, right as he was about to play, the enigmatic and dangerous Dune appeared and exploited his heart flower. Sora became a Deserterian against his will and since a Precure was not readily available, his Heart flower wilted and his crystal soul crushed by Dune. Watching her own husband perish, Kaoruko despaired and tried to protect him. Coupe then appeared and formed a mutual contract with her so that she may become Cure Flower and have the ability to fight Dune.
Thus Cure Flower’s battle and intense hatred for Dune began. 8U