A story bible for serial fiction writersBeta · free credits daily

Characters, factions and relationships
in one story bible

Map your characters and groups, and see how relationships and hidden affiliations change chapter by chapter.
Organising your settings is free, with no limits.
You write the story.

Explore a demo map — no sign-in

New here? Start right away with your Google account.

What Lenu keeps for you

Keep writing the way you do and note only the settings you want remembered.
Free for any number of characters and works.

  • All your character notes in one place

    Create the fields your story needs (birthday, temperament, martial arts…) and fill them in for each character.

  • A relationship map that changes by chapter

    Sworn brothers become enemies; enemies become allies. Record each relationship by chapter range and slide the chapter bar to see the map at that point in the story.

  • Group trees and hidden affiliations

    Organise nested groups (sect › branch › squad) as a tree and see alliances and rivalries between groups on a map. Keep a spy’s true affiliation hidden and note the chapter where it is revealed.

  • Place maps, events and foreshadowing

    Draw your own maps and log events and in-story dates by chapter. Keep track of when each planted clue pays off.

AI consistency check, only when you want itOptionalIt points out where a new chapter may conflict with your earlier settings, with the evidence. Your manuscript goes to an external AI only when the work’s owner agrees and presses [Request check]. Everything above works without it.

What we don’t do

You write the story, and you decide what to change.

  • 1We don’t write for you

    We don’t rewrite your sentences or draft the next chapter. You write the story.

  • 2We don’t say you’re wrong

    We flag what may differ from earlier chapters as “worth checking”. If the change is intended, just keep it.

  • 3We don’t use your manuscript elsewhere

    Your manuscript is yours. We use it only for checks and to improve check quality — never handed to other users or used to train AI.

AI consistency check, when you want it

Press [Request check] and it points out sentences in a new chapter that may conflict with your earlier settings, citing the chapter it relies on.
If you don’t press it, your manuscript never goes to an external AI.

Ch. 17 · The Return

As the fog lifted, a familiar shadow appeared at the end of the pier. Minsu opened the door and stepped in. “Long time no see.” Old Han set down his teacup instead of answering.

Likely conflict· Events · status

Minsu is remembered as having died in Ch. 15. Please check that his return is intended.

Evidence · Ch. 15 “Minsu’s funeral” · If he came back alive on purpose, keep it as is.

Ch. 18 · The Northern Road

The party left the capital at dawn and stood before the gates of the northern fortress that same evening. Torches flickered on along the walls.

Worth checking· Places · travel

Your setting says the northern fortress is ten days’ ride from the capital. Did they really arrive in one day?

Evidence · Place setting “Northern fortress” · If it was a shortcut or travel magic, keep it as is.

Ch. 19 · The Market

The market was busy from early morning. Ria picks up two apples. The merchant held up three fingers.

For reference· Style

This work has been narrated in the past tense, but this sentence switches to the present.

Evidence · Narration style of Ch. 1–18 · If the change is intended, keep it as is.

Ch. 20 · The Mage Tower

When Kael raised a fingertip, a blue flame bloomed. The apprentices held their breath and watched the light.

No issues· World

Nothing found that differs from your earlier settings.

Magic is part of this work’s world setting, so no warning was raised.

FAQ

Do I have to use AI?
No. Settings, relationship maps and writing all work without AI. Your manuscript goes to an external AI only when you press [Request check].
Will the AI edit or write my story?
No. It never rewrites sentences or writes the next chapter. If you use the AI check, it points out what may differ from earlier settings or chapters, with the evidence — and you decide whether to change it.
Is my manuscript used anywhere else?
The rights to your manuscript and settings stay with you. We never hand them to other users, sell them, or use them to check other works. They go to an external AI only when you request a check, and are sent so that they are not used for training. Operators may view works to run the service and improve check quality, and every view is logged. See the Privacy Policy for details.
I’ve already published 100 chapters. Do I need to enter everything?
No. Add the characters, relationships and groups you need now. If you plan to use the AI check, “Import past chapters” lets you paste your earlier chapters at once, split them, and have them read into memory without warnings.
Can I share a work with collaborators?
Yes. Invite people to each work as editors or read-only members. A writer and an artist can work from the same character settings and relationship map.
What if the AI gets it wrong?
A warning is a request to check, not a verdict. Press [No problem] or [Keep as is] and the same point won’t be raised again on the same evidence. Warnings that can’t cite a line from an earlier chapter or your settings are never shown.
Can I use it for adult (19+) works?
Settings, relationship maps and manuscripts work the same. Because the external AI’s policy does not allow adult content, only the AI check is turned off for works marked 19+. The rule-based settings check (no AI) still works.
Does it cost anything?
Settings, characters, relationship maps and writing are free with no limits. Credits are used only for AI features (checks, reading past chapters). During the beta we give every signed-in user 1,000 free credits a day (about 10 checks of a 5,000-character chapter), refilled at midnight Korea time. For shared works, the owner requests AI features.

Start with the story you’re writing today