From USA Today bestselling author K.M. Moronova comes the first book in the Dark Forces Duet: an addictive, dark romance duology set in the world of the fan-favourite Leave Me Behind.
Dark. Deadly. Irresistible.
Cameron Mortem has a problem: he can’t stop killing his partners. Officially labelled clinically insane, he’s also one of the most lethal assets in the Dark Forces – a brutal underground military operation built on obedience, survival, and silence. But an experimental drug has fractured his control, making him a liability whenever someone else is on the field. As punishment, he’s thrown back into the Under Trials: a merciless boot camp designed to break the weak and sharpen the ruthless.
His one directive? Don’t kill the new girl.
Emery Maves narrowly escapes a death sentence after her own brutal crimes, only to find herself forced into the same violent world. Assigned to Cameron, she’s expected to survive the Trials and her partner's unstable nature. But Emery quickly realises there’s more to Cameron than bloodlust and body counts. Beneath the madness lies a terrifying allure – and a strange, dangerous tenderness.
As the Trials push them to their limits, Emery must navigate the brutal demands of the Dark Forces while resisting the pull of a man who could just as easily kill her as protect her. And Cameron must fight the one urge he’s never been able to overcome.
Their bond is intoxicating, chaotic, and born of violence. And if it doesn’t destroy them both, it might just save them.
Your Knife, My Heart is a dark and enticing military romance from one of the genre’s most exciting new voices, with brutal action and pulse-pounding chemistry that will keep you hooked right to the thrilling conclusion.
Tropes Military Fiction Enemies to Lovers Dark Romance Bully Romance
More from K.M. Moronova: Leave Me Behind My Blade, Your Back (Dark Forces Duet Book 2) – COMING DECEMBER 2025
Kaori undergoes surgery even as Kosei performs in his competition, each of them as vulnerable as ever, but finally embracing the courage to take these ultimate risks. As their journey together draws to a close, the music of their hearts lays bare the truth of their friendship—a friendship that may have begun with an April lie, but which has changed their lives and the lives of everyone around them.
Kosei Arima was a piano prodigy until his cruel taskmaster of a mother died suddenly, changing his life forever. Driven by his pain to abandon piano, Kosei now lives in a monotonous, colorless world. Having resigned himself to a bland life, he is surprised when he meets Kaori Miyazono, a violinist with an unorthodox style. Can she teach Kosei not just how to play, but how to start living again? Lees meer
STACCATO Kosei’s road back to playing the piano has been rough, but he’s finally beginning to regain his confidence, even though he still has trouble hearing the notes. But as his first solo competition in years closes in, Kosei will have to deal with reentering a cutthroat world, where old rivals still remember – and resent – Kosei’s younger self, the precocious Human Metronome. Kaori’s support is unwavering, but will it be enough to push Kosei through all the toxic memories this experience dredges up? Lees meer
GALA MODE Spirits are still high after the Maiho Music Competition when Kaori receives a letter in the mail: There’s going to be a gala concert to celebrate the winners, and even though Kaori and Kosei didn’t advance, they’re invited to perform! Confident they can leave a lasting impression, Kaori seizes the chance to order Kosei back onto the stage with her. The ultimate duo that moved an entire audience’s hearts will perform once more, and people are buzzing with anticipation. Yet Kosei seems listless and uninterested in the festivities. Can Kaori and Kosei get their act together in time?! Lees meer
After successfully performing a piece imbued with his mother’s memories, Kosei overcomes his trauma and seems stronger than ever. But for Kaori, the gala concert was spent bedridden in the hospital. Her second hospitalization, nearly back-to-back with her previous one, exacerbates Kosei’s fears. Even then, he continues to practice piano. But one day, on the way to his music lessons, a strange girl falls into Kosei’s life–what will he do?! Lees meer