Why does KINOMOTO SAKURA KINOMOTO SAKURA in Fantasy City have to die?

Because the ice king suspects that Sakura Kongshi is not the pure blood of the ice clan, and Sakura Kongshi is not the candidate of the ice king who was divined by the Seven Saints with the Holy Rubik's Cube that retains the memory and spiritual strength of Shemi. Even if Castle loses his spiritual strength, he is no different from a mortal. The Ice King and the Seven Saints still firmly supported Castle to ascend to the throne. What they recognized was not Castle's ability, but the ability of his ancestor Shemi. Because of their worship of their ancestor Shemi's belief, they never questioned the divination results of the Rubik's Cube.

The Seven Saints wanted to kill KINOMOTO SAKURA just because they were afraid that KINOMOTO SAKURA would seize the throne!