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

TTRPG Freelance Writer

Recent News

Cover of Lost Omens Tian Xia World Guide

June 2024: Welcome to Tian Xia. We have ghosts.
Lost Omens: Tian Xia World Guide has finally arrived!
The Season of Ghost Adventure Path is going strong too. Thank you to everyone who has given the Adventure Path your support!

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 and Level Up. She is one of the winners of the Diana Jones Emerging Designer Program in 2023.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 Bluesky @senhhs.bsky.social for her latest activities and thoughts.A list of projects she has participated in may be found under portfolio.For business inquiries, see contact.


Known Direction, Presenting, Freelancer interview: Podcast / Youtube
Gen Con, TableTakes, DJA Emerging Designer Winner Interview: Youtube
Paizo, Paizo Live, Season of Ghost AP Promotion: Twitch VOD


Lost Omens: Tian Xia Character Guide
AP #206: Bring the House Down
And more unannounced projects...
*Cover credits bolded


Wayfinder #22Millet of ErastilPaizo Fans United
Lost Omens: Tian Xia World GuideHistory, [Redacted]Paizo Inc.


Pathfinder Treasure VaultFulusPaizo Inc.
Pathfinder Lost Omens FirebrandsRelationships, Jin LiPaizo Inc.
Starfinder Port of CallsAccord Ports, Quinsetti (NPC), Auevi (NPC)Paizo Inc.
Pathfinder Lost Omens HighhelmFolgritPaizo Inc.
Pathfinder Rage of ElementsCultural Consultant, Cover AuthorPaizo Inc.
Pathfinder Society Year 5 Intro: Year of Unfettered ExplorationScenario WriterPaizo Inc.
Battlezoo Bestiary (5E)ContributorRoll For Combat
Pathfinder AP #196: The Summer that Never WasCover AuthorPaizo 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 Gazetteer, Sensitivitiy 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 and Writing
Cultural Sensitivity Consultation and Reading
Writing samples available upon request

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