"Sister, I can finally love you without any scruples!"
They once thought that even if siblings love each other, as long as there is love, they can overcome all difficulties and obstacles, but fate's trick made them regret that love is not omnipotent.
So what is love?
Love needs to be cherished, needs to be brave, needs to abide by the agreement, it is irreplaceable...
They think they understand what true love is, but they forget that not all love can be acknowledged!
They depend on each other for life and death, but are not tolerated by the world, so where will they go?