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BunCho Studio

AI novel editor

A novel editor that rewrites chapter by chapter from one instruction

Type a one-line request such as "make this more gripping". You first see which chapters and sections will change and how many credits it will use. Rewrites appear as diffs, and only what you accept goes into your manuscript.

Try the novel editorSee pricing

Free plan, no card needed. Paid plans start with a 7-day free trial (card required at sign-up).

Screenshots show the Japanese version of the studio. The studio is also available in English, Spanish, Portuguese and Traditional Chinese.

Screen recording of the novel editor (first 30 seconds, no sound)

What it does

  • Instruct or ask, in one box

    "Edit" changes the text; "Ask" answers without touching your work. Target a selection, a section, a chapter or the whole work, and use @ to point at chapters or characters.

    Recording of writing an instruction in the AI box, choosing the target and running it
    The AI instruction box

  • See the plan and credits before it runs

    A plan of which sections change comes first; untick anything you want to skip. Then an estimate appears, and nothing starts until you press "Agree and run".

    Confirmation screen listing sections to read and an estimate of about 345 credits
    Estimate before running

  • Review chapter rewrites as diffs

    Red is removed, green is added. Accept or reject each change, or accept all. Only accepted changes enter the manuscript.

    Diff of a rewrite with removed text in red, added text in green and accept/reject buttons
    Reviewing the diff

  • Turn your novel into a manga

    Pick chapters, format and page count, check the estimate, and BunCho makes the manga as a new work. Your manuscript stays as it is.

    The novel-to-manga panel: source chapter, manuscript, format and page count
    Novel to manga

  • Story X-ray: foreshadowing and flow

    Emotion, tension, pacing, foreshadowing and characters, layered by chapter. Unresolved setups appear in the diagnosis. Viewing it uses no credits.

    Foreshadowing life cycle (open and resolved) and the diagnosis of unresolved setups
    Story X-ray: foreshadowing

How a rewrite works

  1. Ask in one line — Write the request and pick the target: section, chapter or whole work.
  2. Check the plan — Untick changes you do not want.
  3. Agree to the estimate — Runs only after you agree, and stops automatically at about 1.6x the estimate.
  4. Accept the diff — Accept what you like; only that enters the manuscript.

Credits are shown before anything runs

  • Before an AI edit, you see the sections, length and estimated credits
  • It stops automatically at about 1.6x the estimate
  • "Ask" does not change your work. Story X-ray uses no credits

FAQ

Will the AI change my manuscript on its own?
No. Changes are shown as diffs and only accepted ones are applied.
How many credits does it use?
It depends on how much is read. You see an estimate first and it stops at about 1.6x.
Can I turn my novel into a manga or video?
Yes: novel to manga, novel to storyboard, and novel to video are all available from the editor.
Do I need to disclose AI use when submitting?
Rules differ by site and contest and can change. Check each site's latest guidelines before posting.

Try it in the studio

Try the novel editor

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