(PRE-ORDER) Shadow King Omega: Book 1 of the LGBTQ+ Steamy Shifter Romance Series, Hardcover Edition

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PRE-ORDER: Debuts October 6th, 2026! In a sweet-yet-seductive introduction to the Shadow King Omega series, Book 1 is the first step in a deeply passionate werewolf romance between dear “friends.” 

Renowned as a global diplomat for wolf shifter packs, Markus has one communication problem he can’t solve: he’s fallen in love with his childhood best friend. Actually, he might have craved Ari for a long time, but they live on opposite sides of the globe.

Ari has been unrequitedly in love with Markus for as long as he can remember. If only Ari could resist his primal instincts to return to Markus’s side.

When Markus agrees to sneak Ari into a gladiator-style strength competition for all pack leaders, neither of them expect it to be so easy for Ari to win. However, Ari’s new urban legend status as the “Shadow King” doesn’t create the effect he and Markus hoped for; despite Ari’s physical prowess as an Omega, society still sees Alphas as the default leaders.

But Markus and Ari have another long-kept secret. Ten years ago, a frisky, teenage Ari accidentally bound their souls in a sacred mate bond—except they’re not fated mates. How could they be? Sure, they care for each other more than anyone else in the world, but they’ve known each other forever. Ari’s guilt drives a wedge between them despite how tender their friendship remains. They just want each other to be happy.

Half-bonded with half a world between them, Markus and Ari aren’t happy.

Enough is enough. Neither Lycan knows how the other feels—and that the next time they see each other, they’ve both vowed to speak their truths.

But once they do confess, how will that change their relationship after twenty-six years? As their bond morphs into something new, Ari and Markus uncover more about themselves than they ever have—and plot their next move to protect the Lycan world at large.

Shadow King Omega features first times, transgender representation, an Omega doubting his ability to lead due to chronic illness, and a genderfluid werewolf struggling to accept his Alpha side due to past trauma. This is the first book in the Shadow King Omega series, an LGBTQ+ wolf shifter series following one couple in the Greenfield Pack universe. Expect high romantic tension peaking with high spice, hurt/comfort, marking and knotting, mysterious pack troubles, and plenty of werewolf affection.

Features 11 exclusive illustrations from the author, River Kai, and a map by Lukas Kazmirski and River Kai!

Content warnings: Shadow King Omega contains depictions of anxiety, PTSD, OCD, consensual and highly descriptive sexual scenes, negative self-talk that will be debunked, a misgendering instance that’s called out as harmful, chronic pain, and a fictional reproductive disorder.

ISBNs:

Ebook: 979-8-9926605-1-7

Paperback: 979-8-9926605-2-4

Hardcover: 979-8-9926605-3-1

Special Edition: 979-8-9926605-4-8

Signed by the author?:
Add-ons:

PRE-ORDER: Debuts October 6th, 2026! In a sweet-yet-seductive introduction to the Shadow King Omega series, Book 1 is the first step in a deeply passionate werewolf romance between dear “friends.” 

Renowned as a global diplomat for wolf shifter packs, Markus has one communication problem he can’t solve: he’s fallen in love with his childhood best friend. Actually, he might have craved Ari for a long time, but they live on opposite sides of the globe.

Ari has been unrequitedly in love with Markus for as long as he can remember. If only Ari could resist his primal instincts to return to Markus’s side.

When Markus agrees to sneak Ari into a gladiator-style strength competition for all pack leaders, neither of them expect it to be so easy for Ari to win. However, Ari’s new urban legend status as the “Shadow King” doesn’t create the effect he and Markus hoped for; despite Ari’s physical prowess as an Omega, society still sees Alphas as the default leaders.

But Markus and Ari have another long-kept secret. Ten years ago, a frisky, teenage Ari accidentally bound their souls in a sacred mate bond—except they’re not fated mates. How could they be? Sure, they care for each other more than anyone else in the world, but they’ve known each other forever. Ari’s guilt drives a wedge between them despite how tender their friendship remains. They just want each other to be happy.

Half-bonded with half a world between them, Markus and Ari aren’t happy.

Enough is enough. Neither Lycan knows how the other feels—and that the next time they see each other, they’ve both vowed to speak their truths.

But once they do confess, how will that change their relationship after twenty-six years? As their bond morphs into something new, Ari and Markus uncover more about themselves than they ever have—and plot their next move to protect the Lycan world at large.

Shadow King Omega features first times, transgender representation, an Omega doubting his ability to lead due to chronic illness, and a genderfluid werewolf struggling to accept his Alpha side due to past trauma. This is the first book in the Shadow King Omega series, an LGBTQ+ wolf shifter series following one couple in the Greenfield Pack universe. Expect high romantic tension peaking with high spice, hurt/comfort, marking and knotting, mysterious pack troubles, and plenty of werewolf affection.

Features 11 exclusive illustrations from the author, River Kai, and a map by Lukas Kazmirski and River Kai!

Content warnings: Shadow King Omega contains depictions of anxiety, PTSD, OCD, consensual and highly descriptive sexual scenes, negative self-talk that will be debunked, a misgendering instance that’s called out as harmful, chronic pain, and a fictional reproductive disorder.

ISBNs:

Ebook: 979-8-9926605-1-7

Paperback: 979-8-9926605-2-4

Hardcover: 979-8-9926605-3-1

Special Edition: 979-8-9926605-4-8

The Thrilling, Smoldering Conclusion

In a thrilling conclusion to a heartfelt, smoldering love story, every secret, mystery, fear, and joy surfaces, changing the course of the Lycan world.

King Luna: Book 3 of My Shy Alpha, the Steamy Shifter Romance Series includes:

  • 11+ exclusive illustrations by the author

  • unpacking trauma

  • OCD & PTSD representation

  • enthusiastic, consensual, and FERAL steamy scenes

  • removing misogynists from control

  • expectant parents

  • werewolf genderqueerness

King Luna is the third and final book in My Shy Alpha, the Steamy Shifter Romance Series.

Book Details

ISBNs

Ebook: 979-8-9900293-5-4

Paperback: 979-8-9900293-9-2

Hardback: 979-8-9926605-0-0

Imprint: Riverwolf Fantasy Press

Publisher: River Kai Art

Publication date: ‎ June 3, 2025

Language: ‎ English

Print length: ‎ 510 pages

Book dimensions: 5.5” x 8.5”

About the Author

As a bisexual and transgender creator, River Kai specializes in LGBTQ+ Romance, Sci-Fi, and Fantasy with mental health and disability representation, creating stories for readers like him to see they're not alone. While he writes in multiple Romance sub-genres, his stories share three recurring themes: empowering character arcs about healing from trauma, authentic representation of transgender or bisexual main characters with depression, anxiety, PTSD, and OCD, and a sweet-but-spicy emphasis on consent.