Time and Space Misaligned

One is a killing machine developed by future technology, and the other is a murderous princess who is naturally indifferent to emotions. Once time traveled, Zero came to this fictional dynasty and accidentally got involved with her. From then on, he became her sword finger. As for the throne, if she wants it, I can help her get it. Those good-for-nothing brothers will just disappear without a trace. I will keep her safe. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.