Willow Kepler writes sci-fi romance with bite. Her stories follow capable heroines through alien jungles, deep-space expeditions, and worlds where biology is stranger than imagination.
In reality, she is based in Germany, spending most of her time writing or drawing her own covers. With a Master’s Degree in Bioengineering, Willow’s worlds are (mostly) scientifically correct, and pick up concepts of biotechnology with often neurodivergent women in STEM at the center.
Expect xenobiology, moral tension, emotional growth, and unapologetically steamy encounters with sometimes unsettling lovers. Every journey ends in a hard-won happy ending.

I swore to defend humanity. He vowed to annihilate it.
Aurora
I’m on a space mission to kill. As a 30-year-old pediatrician, the odds are against me, but I have a plan. Rules and routine kept my sister and me safe. And I will not let an alien threaten the future I built for her.
Except once on the ship, he haunts my dreams while I’m trapped in cryo-sleep. His face is a blur, his body massive and muscular, but his intent is clear: this purple, fanged monster wants my blood.
When I wake again, my only ally on board is dead, and to survive, I must strike a deal with the vampire I vowed to kill.
Zadriel:
I spent centuries fighting wars, stifling all my emotions to survive. Once I find her, I’m too far gone. Carelessly, I take.
But as her blood hits my tongue, I know two things: I would die to protect her, and forever regret hurting her.
In hopes she lets go of her plan to kill me; I offer her my protection for her blood.
Eventually, she’ll have to accept the pleasure of my bite and our bond. Until then, I have decades to spare.Follow Aurora and Zadriel into galaxies of new desires in this vampiric, spicy alien-romance.

“ROOTED—Mates of the Jungle 1” will come out in fall 2026!Crash-landing on a jungle planet mere minutes after the mission started really isn’t how botanist Ivy Swanson imagined this mission would go. Finding a plant-based cure for a deadly virus devouring humanity sounded like a good last stand. But now, alone in the dense green jungle, surrounded by alien plants, she isn’t sure anymore.
Someone or something is watching as she fights for her survival.
Ka’at has seen humans before. Years ago, they came to destroy his world, and now they are back. He watches the woman who gently caresses his plants’ leaves, and gazes wistfully at his jungle. Something about her intrigues him: her sweet scent, her soft body, and her green eyes. And his jungle has decided it too: Yes, she is his mate and shall be courted with the plants of his forest.
Explore the green side of desire and the jungle in this standalone, high-heat sci-fi romance.

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Receive an extra prequel short story to the "Blood Brides" series. About the first encounter, and how it all began, discovering the first space vampire on a forgotten battleship, deep in space.