Lone Wolf by Persephone Black

A perfect soldier, feared and respected, and determined to stay alone. She does not want a partner, but the Styx Syndicate assigns her to work with Sunny Santiago, who is reckless, warm, and impossibly alive. Sunny laughs through missions and treats danger like a game, and the narrator hates how well they work together.

One moment of vulnerability after a mission shifts everything, challenging her belief that caring makes a weapon weak. When a high‑stakes assignment drags Sunny’s tragic past into the present, the narrator must choose between remaining the emotionless killer she was built to be or risking everything to protect the one person who makes her feel something again.