Beneath Seoul's glittering skyline, peace is maintained by an invisible hand - the Order & Harmony Organisation (ONHO).
They kill for balance -  silence for stability and erase chaos with precision.

But when Jangmi Choi, one of their finest assassins, loses everything to the very system she served, her vengeance becomes the spark that exposes the lie beneath ONHO's harmony.

As the blood of the guilty - and the innocent alike - stains the streets, Jangmi learns that peace without purity is nothing.
And, every Rose has its Thorns.

Killer Rose