Strike Zone by Cynthia Sax

A cyborg devoted to duty…and to her.
***While attending a party, Kesser, the daughter of her planet’s leader, witnesses the abduction of her best friend and her best friend’s mate.

She’s determined to rescue them. Preferably without fracturing the fragile peace agreement her mom has crafted with the abductors’ planet.
The only issue is…she has never participated in a retrieval mission.
Searching for assistance, she approaches the mate’s guard. The male, with his big broad shoulders and deep growly voice, affects her like no other being ever has.
Kesser wants him. She trusts him. And she requires his stealth combat skills.
Desperately.
Strike is no guard. The D Model cyborg has been sent to the sector to discreetly investigate a potential planet-destroying situation.
When a curvy human female with big brown eyes requests his help with a rescue, he doesn’t hesitate to say yes. She’s his genetic match, the one being he was manufactured to protect.
She’s also traveling to the next planet he has to search. He plans to claim his female while he fulfills his responsibilities to his kind.
Neither Strike nor Kesser realizes the dangers facing them are far greater than they imagine. Their enemies are converging, and one failed mission could doom the entire universe.