She is a killer from the 21st century. She accidentally traveled through time and became the eldest lady of a general's palace in an imaginary continent. But who would have expected that this eldest lady would be spurned by countless people. He settled down as he came, started a career for fun, and fell in love while pursuing a career, but his heart was stolen by a monster for no apparent reason.
Someday.
"Stupid girl, can't you just stay with me?"
"Why me?"
"Why do you tell me? Who asked you to run around? Of course my things should be kept by my side."
"Nonsense! What is your thing? Am I a thing? I am the one who wants to cause big troubles."
Concept: How does the world develop? Many unknown people were born in this nearly infinite time. A simple time travel hides huge secrets.