Story Structure and Character Design: Building Plots with AI

AI Navigate Original / 4/27/2026

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Key Points

  • AI is strong at material/organizing; humans hold theme and emotion
  • Fix structure (three-act/kishotenketsu/hero's journey) and characters first
  • Feed character sheet and a style sample to give personality
  • Division: AI supplies/organizes, humans own theme and final revision

AI Writing's Strengths and Limits

AI is astonishingly strong at material generation and organizing, but humans must hold the story's theme and emotional core. Just asking AI to "write an interesting novel" tends to be mediocre. The trick is to fix story structure and characters first.

Story-Structure Frameworks

Three-Act Structure (Hollywood Style)

  • Act 1 (25%): protagonist, world, problem presentation
  • Act 2 (50%): obstacles and trials, midpoint reversal
  • Act 3 (25%): climax and resolution

Kishotenketsu (Japanese Style)

  • Ki: introduce protagonist and world
  • Sho: deepen the problem
  • Ten: unexpected turn
  • Ketsu: landing and resonance

Hero's Journey (Mythic)

A 15-stage journey structure (departure → trials → return). Frequent in films/RPGs.

How to Feed AI

  1. Present the chosen structure to AI as a format
  2. Bullet "what should happen" and "character emotional change" per act

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Story Structure and Character Design: Building Plots with AI | AI Navigate