The Blade in the Mirror

The assassination orders issued by the Dark Tower and the Bloodblade Pavilion have hung over them for ten years. She is the sharpest blade in the Pavilion, and he is the most venomous ember in the Tower.

Then, one night, the "corrupt official" she had been ordered to assassinate took off his outer robe beneath the moon and draped it over her to shield her from the wind and snow. The "Bloodblade assassin" he had meant to silence tore open his sleeve in a ruined temple and set his broken bone. When her bloodstained insignia struck his black iron pendant, they finally recognized each other. The "mortal enemies" named in those orders had long since become the one light in the dark that neither could bear to point a blade at.

After unexpectedly arriving in another world, the two set out to find a way back. In truth, they had always belonged to this world. The demon race has completely overrun the continent, and Xie Jueshuang is the only one who can change its fate. He uses a rewind through time to send them away. Even after living through it all again, they still love each other, and their feelings deepen as they fight the demons.