Headshot Profile Image

Yvonne H. (Sen.H.H.S)

TTRPG Freelance Writer

Recent News

Starfinder Book of the Dead Cover

Latest News: Book of the Dead Released!
Check out some spoooooooky ghosts and items by yours truly in this glorious book all about undead, narrated by Geb the ghostly king himself.
Available on Paizo now!

Upcoming Publications
From Paizo:
Dark Archive
Drift Crisis
From EN Publishing: Print versions of...
Level Up: Advanced 5th Edition
Level Up: Memories of Holdenshire
...and more this year and onward!


Yvonne, pen name Sen H.H.S., is a Taiwanese freelance TTRPG writer who has both self-published and written for acclaimed publishers and projects such as Paizo, Level Up, and the Unbreakable Anthology.She spent her formative years in Taiwan before going abroad to live in Singapore, China, and Canada. She has a BMLSc degree from the University of British Columbia. She is also an alumni of the Writer Studio program at Simon Fraser University, where she studied speculative fiction under Hiromi Goto.Yvonne currently lives in New Taipei City with her loving parents. You can follow her on Twitter @SenHHS for her latest activities and thoughts.A list of projects she has participated in may be found under portfolio.For business inquiries, see contact.


Unbreakable Anthology 2021
Pathfinder Dark Archive
Starfinder Drift Crisis
Wayfinder #22


Pathfinder Book of the DeadGhosts, some itemsPaizo Inc.
SF Galactic MagicThe Cycle, SangposhtiPaizo Inc.
Level Up: Memories of HoldenshireDesignerEN Publishing


Sol Survivor: Print EditionShort StoryW.H. Arthur
Vice and VirtueRandomized TablesDungeons on a Dime
In*die Zine Mar 2021Supplement SongIn*die Zine
Pathfinder Bestiary 3Imperial Dragons, Guardian BeastsPaizo Inc.
CoM: Atlantis DividedLore and ArchetypeRealmwarp Media
Dreams of Nu-waAdventure, Art, LayoutSelf-published
In*die Zine Jun IssueSupplement SongIn*die Zine
A Clash of LightningMini-encounterDagonzo
PF AP #167: Ready? Fight!Goka Gazatteer, Sentivitiy ReadingPaizo Inc.
Breaking Out a DrowMini-encounterDagonzo
Secrets of MagicFuluPaizo Inc.
Level Up: Adventurer's GuideLead DesignerEN Publishing
Level Up: Monstrous MenagerieLore WriterEN Publishing
LO: The Grand BazaarUrban Garden JewelersPaizo Inc.
PF Guns and GearsTian Xia and Vudra: Birth of Black PowderPaizo Inc.
This Night and ThenScenario WriterUnnamed Game Company
Monster of MythsKaijusPaizo Inc.


TitleEntryPublisherProduct Link
Weaver's AlmanacAppendix SongDee PennywayWebsite
Arium FlashAdventure SeedAdept IcarusKickstarter
In*die Zine Sep 2020Supplement SongIn*die ZineItch.io


TitlePublisherProduct Link
Land of Pan-guSelf-publishedItch.io


TitlePublisherProduct Link
Emerge 15The Writer StudioAmazon




Available for:
Worldbuilding and Lore Creation
TTRPG Design, Layout, and Writing
Cultural Sensitivity Consultation and Reading
Writing samples available upon request

Please include "Business Inquiry" in subject line.
Email: yvonnehsiao925 @ gmail.com