Multi-Agent Based Character Simulation for Story Writing

Tian Yu, Ken Shi, Zixin Zhao, Gerald Penn


Abstract
This work proposes a novel multi-agent story-generation system that writes stories from a narrative plan. Traditional approaches tend to generate a section of text directly from its outline. Our system, by contrast, divides this elaboration process into role-play and rewrite steps, where the former step enacts the story in chronological order with LLM-backed character agents, and the latter step refines the role-play result to align with a narrative plan. We show that the stories produced by our system are preferable to two other LLM-based story-generation approaches. We attribute this advancement to the benefits of incorporating a character-based simulation strategy.
Anthology ID:
2025.in2writing-1.9
Volume:
Proceedings of the Fourth Workshop on Intelligent and Interactive Writing Assistants (In2Writing 2025)
Month:
May
Year:
2025
Address:
Albuquerque, New Mexico, US
Editors:
Vishakh Padmakumar, Katy Gero, Thiemo Wambsganss, Sarah Sterman, Ting-Hao Huang, David Zhou, John Chung
Venues:
In2Writing | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
87–108
Language:
URL:
https://preview.aclanthology.org/landing_page/2025.in2writing-1.9/
DOI:
Bibkey:
Cite (ACL):
Tian Yu, Ken Shi, Zixin Zhao, and Gerald Penn. 2025. Multi-Agent Based Character Simulation for Story Writing. In Proceedings of the Fourth Workshop on Intelligent and Interactive Writing Assistants (In2Writing 2025), pages 87–108, Albuquerque, New Mexico, US. Association for Computational Linguistics.
Cite (Informal):
Multi-Agent Based Character Simulation for Story Writing (Yu et al., In2Writing 2025)
Copy Citation:
PDF:
https://preview.aclanthology.org/landing_page/2025.in2writing-1.9.pdf