Creating Kokoro: The Future of Authors and Stories Shaped by Large Language Models

Abstract

Conversational AI has improved significantly with the rise of Large Language Model(LLM). As research on character design grows, conversation with story creator's character offers new insights into a story’s deeper layers and cultural background, while fostering emotional involvement. However, current conversational systems still face issues: for example, a Meiji-era author might provide details on modern devices or give contradictory statements about the story world, reducing engagement. I propose design guidelines—supported by conversational log examples—that ensure consistent representation of characters and settings while enhancing user experience. These guidelines can be applied in areas such as entertainment, education, and creative support. Based on the guidlines, I developed a web application and the user survey showed a high level of satisfaction. By a narrative-focused view, I aim to elevate AI beyond a simple tool, making it a source of new storytelling experiences and cultural value.