Cast out as a child and nearly killed on her return, the blind and fragile Namgung Soyo should have died quietly on a mountain road.

Instead, the assassins fall.

Because the woman in her place is Yeo Il—former elite killer of the infamous Salmak, now living under a stolen name.

When the real Soyo is murdered in an ambush, Yeo Il makes a reckless choice: she takes the identity of the Namgung Clan’s illegitimate daughter and walks straight into the lion’s den. A clan rotting from within. Brothers who hide their claws behind courtesy. A disgraced heir drowning in wine. And a secret rumored to be buried in the clan’s heart—the Killing Register of Salmak.

Pretending to be blind. Pretending to be weak. Pretending to belong.

But Yeo Il has never been fragile.

In a house where blood ties cut deeper than blades, the deadliest weapon is deception—and she intends to survive long enough to uncover the truth.