Yvonne H. (Sen.H.H.S)
TTRPG Freelance Writer
Recent News
Cover of Starfinder Second Edition Galaxy Guide
Pathfinder Lost Omens: Shining Kingdoms
June 2025: Galaxies and Kingdoms
Ready to explore the universe? Check out Starfinder 2e Galaxy Guide if you seek a galaxy (or many) of adventures. For dragons and magic, look no further than Lost Omens: Shining Kingdom!
Upcoming Publications
Pathfinder Lost Omens: Draconic Codex
Starfinder Alien Core
...and more upcoming!
Top Picks
Rage of Elements
The Summer that Never Was
Bring the House Down
Lost Omens: Tian Xia World Guide
About
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 and part of the writing team for the ENnie Award-winning Lost Omen: Tian Xia World Guide.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.A list of projects she has participated in may be found under portfolio.For business inquiries, see contact.
Media
Interviews
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
Publications
Upcoming
Pathfinder Lost Omens: Dragon Codex
Starfinder Alien Core
And more unannounced projects...
2025
| Title | Role/Content | Publisher |
|---|---|---|
| Pathfinder Lost Omens: Shining Kingdom | Taldor | Paizo Inc. |
| Starfinder Galaxy Guide | Absalom Station | Paizo Inc. |
| Pathfinder NPC Core | Political upstart, gunwitch, high roller, peerless duelist, retired adjustment, gunwitch weapons | Paizo Inc. |
| Battlezoo Dragons: Battle Dragons | Writer | Roll For Combat |
2024
| Title | Role/Content | Publisher |
|---|---|---|
| Wayfinder #22 | Millet of Erastil | Paizo Fans United |
| Lost Omens: Tian Xia World Guide | History, [Redacted] | Paizo Inc. |
| Pathfinder Infinite: Feat + | Contributing Writer | Team+ |
| Pathfinder AP #203: Shepherd of Decay | Misc. toolbox items | Paizo Inc. |
| Iconic Encouters: Tidying Up | Flash Fiction | Paizo Inc. |
| Lost Omens: Tian Xia Character Guide | Yaoguai, Five Breath Vanguard, misc. items | Paizo Inc. |
| Pathfinder AP #206: Bring the House Down | Cover Author | Paizo Inc. |
2023
| Title | Role/Content | Publisher |
|---|---|---|
| Pathfinder Treasure Vault | Fulus | Paizo Inc. |
| Pathfinder Lost Omens Firebrands | Relationships, Jin Li | Paizo Inc. |
| Starfinder Port of Calls | Accord Ports, Quinsetti (NPC), Auevi (NPC) | Paizo Inc. |
| Pathfinder Lost Omens Highhelm | Folgrit | Paizo Inc. |
| Pathfinder Rage of Elements | Cultural Consultant, Cover Author | Paizo Inc. |
| Pathfinder Society Year 5 Intro: Year of Unfettered Exploration | Scenario Writer | Paizo Inc. |
| Battlezoo Bestiary (5E) | Contributor | Roll For Combat |
| Pathfinder AP #196: The Summer that Never Was | Cover Author | Paizo Inc. |
2022
| Title | Role/Content | Publisher |
|---|---|---|
| Pathfinder Dark Archive | Mindscape Adventure (1st half) | Paizo Inc. |
| Pathfinder Book of the Dead | Ghosts, some items | Paizo Inc. |
| SF Galactic Magic | The Cycle, Sangposhti | Paizo Inc. |
| Level Up: Memories of Holdenshire | Designer | EN Publishing |
| SF Drift Crisis | Pre-Crisis Drift | Paizo Inc. |
| Remarkable Guilds | Contributing Writer | Loresmyth |
| PF Bounty #21: Against the Unliving | Bounty Writer | Paizo Inc. |
2021
| Title | Role/Content | Publisher |
|---|---|---|
| Sol Survivor: Print Edition | Short Story | W.H. Arthur |
| Vice and Virtue | Randomized Tables | Dungeons on a Dime |
| In*die Zine Mar 2021 | Supplement Song | In*die Zine |
| Pathfinder Bestiary 3 | Imperial Dragons, Guardian Beasts | Paizo Inc. |
| CoM: Atlantis Divided | Lore and Archetype | Realmwarp Media |
| Dreams of Nu-wa | Adventure, Art, Layout | Self-published |
| In*die Zine Jun Issue | Supplement Song | In*die Zine |
| A Clash of Lightning | Mini-encounter | Dagonzo |
| PF AP #167: Ready? Fight! | Goka Gazetteer, Sensitivitiy Reading | Paizo Inc. |
| Breaking Out a Drow | Mini-encounter | Dagonzo |
| Secrets of Magic | Fulu | Paizo Inc. |
| Level Up: Adventurer's Guide | Lead Designer | EN Publishing |
| Level Up: Monstrous Menagerie | Lore Writer | EN Publishing |
| LO: The Grand Bazaar | Urban Garden Jewelers | Paizo Inc. |
| PF Guns and Gears | Tian Xia and Vudra: Birth of Black Powder | Paizo Inc. |
| This Night and Then | Scenario Writer | Unnamed Game Company |
| Monster of Myths | Kaijus | Paizo Inc. |
Before 2020
| Year | Title | Entry | Publisher | Product Link |
|---|---|---|---|---|
| 2020 | Weaver's Almanac | Appendix Song | Dee Pennyway | Website |
| - | Arium Flash | Adventure Seed | Adept Icarus | Kickstarter |
| - | In*die Zine Sep 2020 | Supplement Song | In*die Zine | Itch.io |
| 2019 | Land of Pan-gu | Self-published | Itch.io | |
| 2015 | Emerge 15 | The Writer Studio | Amazon |
Contact
Looking for...?
Worldbuilding and Lore Creation
TTRPG Design and Writing
Cultural Sensitivity Consultation and Reading
Send an email and let's talk!
Please include "Business Inquiry" in subject line.
Email: yvonnehsiao925 @ gmail.com