The heroine lost her memory due to a failed mission, strayed into the enemy's camp, and had an emotional entanglement with the enemy's heir. When her memory recovers, the two identities (killer and lover) collide fiercely. Love itself is the biggest foreshadowing and reversal. The core of the story is the contrast between "black and white" and "amnesia redemption". Old hatred is the bright line and new love is the dark line. When the two meet, it is the beginning of the real climax.
