Which Kindle Unlimited Science Fiction Books Feature Time Travel Ethics?

5 Age-Gap MM Forbidden Romances- Ever fantasize about a battle-hardened Alpha King spotting your scent in the shadows until you’re whimpering for his mark? Feel the Lycan Daddy’s touch tracing your spine post-shift, growling how he’ll own you forever. The Bratva CEO in the boardroom with you. High-ranking professors rob secrets from trembling omegas. Step-dads date their step-sons on midnight. Rival Silver Fox Alphas collapsing decades of territory war into knotting ecstasy. These Daddies devour minds, leaving you psychologically chained, leaking. Raw power imbalances. Psychological grooming into feral bliss.

In a bleak future, the man with everything wants one more thing. Her. Tiernan is a man with everything, and he’s not used to being denied what he wants. When he sees Madison from a distance, he makes the arrogant decision to take her. Her family needs her, but she has little choice except to become the Commander’s new companion, albeit reluctantly. Life in the hub of power isn’t what she expects, and neither is Tiernan. He’s dark and demanding, but there are flashes of tenderness that have her falling for the man she glimpses inside the cold and exacting commander of their territory. Which Teirnan is the real one—the tyrant or the tender lover? At first, it seems impossible that she could ever be happy with the man who forced her to give up her life, but feelings grow between them. Their relationship reaches a fragile new level that could deepen to something neither expected, if betrayal and treason don’t separate the lovers.

Valentine Crimson is a young twenty-two year old adult who accidentally time travels to a wrong place back in 2015 in west where he meets the only heir of the royal family Angelica Kenneth. He saved her life and returns back to his time period 2022 by default. After seven years they meet again. Angelica Kenneth who has now disguised herself as a normal citizen named Lucia. When, Valentine saw her for the first time, he fell in love and wants to stick around. But sticking around with her majesty will bring danger to his life too, unaware of the possible danger coming at him, he falls for her deeper and deeper. . It's a rom-com drama novel inspired with sci-fi and adventure. It is a slow romance.

The Nation of Gryaz has fallen, crushed under the foot and the flying cities of The Empire.Red_Two, a scientist forced to recreate the technologies that had failed him, learns about the Time Travel Project, and makes a vow to steal the device to save himself, and potentially undo the destruction of his home nation. But as he travels into the past, and meets the kindest man and scientist that he has ever known, will Red_Two be able to truly carry out his original goals, considering what is at stake if he does so?Will the spy that he meets let him, or will she simply destroy his world, as he once destroyed hers?

Eliza Ward does not fall through time. Time bends toward her. Pulled from the present into Revolutionary America, Eliza becomes trapped in a landscape where history repeats unevenly, battles restart with variations, and memory functions as both anchor and weapon. She is not a chosen heroine, but a constant: a woman whose awareness destabilizes the moment itself. She meets Mercy Hale, a midwife and witch who understands time as a negotiation rather than a force to command. Mercy aids Eliza’s survival while refusing the role of savior, having already learned the cost of standing too close to history’s center. During a looping battle, Eliza saves Thomas Reed, a Continental soldier who does not shift when time does. Thomas is an anchor: steady, observant, unchanged across iterations. Their bond deepens in an almost-normal village where time briefly behaves. Eliza’s intervention triggers time’s response. Rather than immediate destruction, time collects interest. Mercy bargains to spare Eliza and Thomas, sacrificing her own future to stabilize the present. Time extracts payment from Eliza as well, stripping away her voice, the very tool she uses to name and hold moments in place. Silenced and unmoored, Eliza is violently displaced back into the original battle. Unable to anchor the moment, she watches Thomas die in the version of history that was always waiting beneath her defiance. Told in rotating perspectives between Eliza, Thomas, and Mercy, The Hours That Refused to Behave is a lyrical time-travel novel about revolution, restraint, and consequence, asking not whether history can be changed, but who pays when it is.

The day I win a brand-new BMW, I suddenly receive a call from myself, ten years in the future. "Kieran will ask to borrow your car in a bit. And whatever you do, do not lend it to him. He intends to use it to pay off his gambling debt." Even with such an impossibility happening to me, I do not doubt a thing. When Kieran asks for my keys, I shut him down at once. That very night, he drives his old beater car to visit our parents. Along the way, he loses control of the car and collides with another vehicle. Just like that, he slips into a coma. The guilt hit me so hard that I eventually pass out. Mom and Dad stay by my side day and night until I can stand on my own two feet again. But the future version of me sounds cold when she calls again. "They only want to push you onto an operating table. They want your heart to save him!" Growing suspicious, I check their bags and find a donor report. Rage burns through me. I immediately block them on all platforms and throw them out of my home. When news that Kieran dies from blood loss arrives, I learn that they only ever needed my blood—not my heart. I try to find them to tell them the truth and apologize for my mistake. But the mysterious phone rings again. "They hate you because Kieran died. If you go to them now, they will drag you into a suicide pact." I freeze at the revelation, then tell my future myself that I will wait until they calm down. Later, I learn that a thief breaks into their home and kills them. I try to rush over and see them one last time, but a truck hits me and kills me on the spot. I die without ever understanding why the version of me from ten years in the future wanted me dead. When I open my eyes again, I am back on the day I won the prize.