In the apocalypse, Ye Chayi has two secrets. One: she isn't from this world. Two: she's the lone mercenary known by the codename Nightingale, a name that strikes fear into everyone's heart.
To investigate the truth behind her transmigration, she has no choice but to put on the secret identity of a fragile, innocent girl and infiltrate humanity's largest survivor base. By a twist of fate, the base's strongest fighter, its cold and taciturn commander, takes her for a “high-priority protected person.”
By day, he brings her supplies, teaches her self-defense, and keeps her under his wing. By night, she gears up and fights alongside him, yet he sees her as both his strongest rival and... his most tantalizing mystery.
“Who exactly is Nightingale?” He holds her close, his voice dangerous. “Why does she smell exactly like you?”
It's only a matter of time before her secret identity is exposed, but she never expected that she wouldn't be the only one whose cover got blown first...
[Two powerful leads with secret identities, love and rivalry, mutual devotion, sweet and satisfying HE ending.]
