Legend has it that there is a kind of flower called twin flowers, one flower with two flowers, and two flowers on the same stem. They love each other on a stem, but they also compete with each other and the fight continues. They use the deepest hurt to express the deepest love until death. Until the end, they are even willing to kill each other, because when one dies, the other quietly rots away.
Because of this legend, their mother cruelly separated them. The elder sister lived in the sun, learned family etiquette, and became the most talented heir. The younger sister was imprisoned in an extremely dark castle and could not see the light of day. But the power of the soul is irresistible...