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

TTRPG Freelance Writer

Recent News

Latest News: Tian Xia is Back! AND an AP credit?!
Paizo finally announced the grand secret I was under last year, which is the return of Tian Xia! There's not one, not two, but SIX books incoming!
Not only did I participate in both Lost Omen books, I am also the author of the first volume of the AP, The Summer that Never Was. What awaits the PCs in this spoooooky adventure path? Pre-orders open October, so keep you eyes open!

Firebrands Landed!
Lost Omens: Firebrands is officially out and available!Pick up a copy today to learn what relationship (or not) the Firebrands have with other organizations on Golarion, and also consider worshiping the dragon-carp God of Dares.
...Yes, we made a lot of magicarp jokes in production. I forgot about magicarp.

Upcoming Publications

...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 or Instagream senhhs_writes for her latest activities and thoughts.A list of projects she has participated in may be found under portfolio.For business inquiries, see contact.


PF AP #196: The Summer that Never Was
Lost Omens: Tian Xia World Guide
Lost Omens: Tian Xia Character Guide
Pathfinder Rage of Elements
Pathfinder Highhelm
Starfinder Ports of Call
Unbreakable Anthology
Wayfinder #22
*Cover credits bolded


Pathfinder Treasure VaultFulusPaizo Inc.
Pathfinder Lost Omens FirebrandsRelationships, Jin LiPaizo Inc.


Pathfinder Dark ArchiveMindscape Adventure (1st half)Paizo Inc.
Pathfinder Book of the DeadGhosts, some itemsPaizo Inc.
SF Galactic MagicThe Cycle, SangposhtiPaizo Inc.
Level Up: Memories of HoldenshireDesignerEN Publishing
SF Drift CrisisPre-Crisis DriftPaizo Inc.
Remarkable GuildsContributing WriterLoresmyth
PF Bounty #21: Against the UnlivingBounty WriterPaizo Inc.


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