This Is How We Bleed

When a hit goes wrong, rival assassins Kira Timurov and Yumeko Kawamoto are forced to work together. But the mission hides deeper secrets-ones tied to a black-ops project that connects their families. As enemies close in and trust grows uneasy, the line between survival and something more begins to blur.

Or,

Two rival assassins. One shared past. Zero room for mistakes-and too much room for feelings.