Only the one able to control all four elements will be the chosen one. The chosen one to open the door of what humans have called: HEAVEN ------ Katia and Hana have just discovered that they're the posesors of the sacred power of the elements. But along with it, they also have found out the duties that come with them. Will they be able to fulfill the most important one of them? The protection of history. ----- This manga is read from right to left.