Guam · Fiction · Music
Stories are chemistry
or nothing.
From Guam, I write fiction and music shaped by memory, technology, conflict, haunted places, and the systems that hold a story together.
Author · Songwriter · Guam
Rook Trilogy · Book 2 · Available now
Featured release · Military thriller
Released November 1, 2026 · Available now
Below the
Waterline
Rook Trilogy · Book 2
The Rook Trilogy continues in the latest military thriller from T. S. Duke. Discover the new release, or begin the series with Dead Corridor.
One umbrella
Three names.
One creative practice.
Science fiction as Yuki J. Brook. Horror as J.T. Sebastian. Military thrillers as T.S. Duke. Music under my own name.
Kindle Unlimited
Most Kindle editions are included with Kindle Unlimited.
Start here
Choose your shelf.
Three pen names, three distinct reader promises. Pick the genre that brought you here, then browse only the books that belong on that shelf.
Yuki J. Brook
Science Fiction
Identity, consciousness, technology, memory, and the systems people build around themselves.
Start with Levy Bellamy Arc I → J.T. SebastianHorror
Haunted places, buried histories, damaged people, and the things that refuse to stay gone.
Explore horror → T.S. DukeMilitary Thrillers
Modern conflict, compromised institutions, divided loyalties, and choices that all carry a cost.
Explore thrillers →Available now
Science Fiction
Yuki J. Brook
Speculative fiction about identity, consciousness, technology, memory, and the systems people build around themselves.
Explore all three Levy Bellamy arcs →
Available now
Horror
J.T. Sebastian
Stories about haunted places, buried histories, damaged people, and the things that remain after everyone believes the danger has passed.
Available now
Military Thrillers
T.S. Duke
Modern conflict, compromised institutions, divided loyalties, and the decisions people make when every available choice carries a cost.
The 2026 release calendar
August through November
The complete Levy Bellamy sequence is available now. Below the Waterline, Book 2 of the Rook Trilogy, is now available alongside the complete Levy Bellamy sequence.
Available now
Arc I
Books 1-5 · Released August 1
Buy now →Available now
Arc II
Books 6-10 · Released September 1
Buy now →Available now
Arc III
Books 11-15 · Released October 1
Buy now →Available now · November 1
Below the Waterline
Rook Trilogy · Book 2
Explore the Book → Buy on Amazon →Music by J. Güngör Martinez
Songs for the places
that remain.
Original music shaped by memory, distance, summer, loss, conflict, ambition, and creation.
Album
Where Did Summer Go?
Songs of summer, nostalgia, memory, and the endings we continue carrying with us.
Listen on Apple Music
Album
The Dreamer, The Warrior and the Maestro
Songs moving through imagination, struggle, discipline, ambition, and creation.
Listen on Apple Music
“Fiction, field notes, street food, whiskey, books. Modern war, haunted places, and appetite.”
About
One umbrella.
Three shadows.
I am a Guam-based author and songwriter. I write science fiction as Yuki J. Brook, horror as J.T. Sebastian, and military thrillers as T.S. Duke. I release music under my own name.
Across forms and genres, the work returns to the same questions: what people remember, what places retain, how systems shape human choices, and what remains when the story we tell ourselves stops working.