

The Moon We Bought Is Already Married
An orbital surveyor discovers a purchased moon is bound to another inhabited world by a living tidal agreement. Honoring the deal means confronting a company that has sold the same home to both sides.
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How it begins
The moon moved away from the survey stake.
Only a little.
Three centimeters, according to Sana's instrument.
Enough to make the instrument apologize.
She checked the anchor, the reference frame, and the local gravity correction. All stable.
The stake shifted again.
Across the plain, a line of pale lights answered from the horizon.
Her guide folded both hands.
"It doesn't wish to be measured that way."
"It's a survey stake."
"Yes."
"Placed on land my employer purchased."
The guide looked toward the lights.
"Your employer has made an optimistic purchase."
Sana took off one glove and touched the instrument's manual control.
A new signal crossed the display.
Not an error.
A pattern repeating every seventeen seconds, synchronized with a distant world's rise above the ridge.
The guide opened a case and lifted a narrow silver bowl.
Water inside it tilted toward the rising world.
Sana watched.
On her screen, the same tilt appeared in the moon's deep-field readings.
"What is that?"
"A reply."
"To what?"
"A question asked long before your employer arrived."
The guide set the bowl on the ground.
"I am Iren. I speak for one shore of the agreement, not both."
Sana looked up.
The other world filled half the sky, blue and white and visibly inhabited along its night edge.
Her briefing had called it an unoccupied gravitational companion.
A construction notification flashed on her wrist.
FIRST LANDING TEAM INBOUND. CONFIRM CLEAR SITE.
She did not confirm.
Instead she opened the purchase packet.
On the final page, beneath six seals and an impressive amount of legal language, the seller had guaranteed there were no prior obligations.
Sana looked at the water leaning steadily toward the sky.
"How long has this agreement existed?"
Iren smiled without humor.
"Long enough for someone to know they were leaving it out."
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Outline and characters
Develop this idea
Treat the marriage metaphor as the civilizations' legal and ecological relationship, not a claim that a celestial body has human romantic feelings. The two worlds need distinct interests and voices. Sana can document consequences but cannot decide their agreement for them. Make the company's supposed purchase depend on specific omissions, with the orbital risk established before construction creates the crisis.
- Sana arrives to survey a moon her company purchased
- Its tides answer another inhabited world's ceremonial signals
- Iren explains the relationship as a binding mutual agreement
- The company dismisses the agreement as superstition
- Sana measures physical consequences of separating the orbital partners
- Both communities reveal internal disagreements about renewal
- A construction fleet begins work before consent is secured
- Sana exposes incompatible sales contracts and suspends the false survey
- The worlds negotiate a renewed arrangement through their own representatives
- The survey becomes a record of obligations rather than possession
Characters
- Sana Bell, 41. Orbital surveyor
- Iren, 112. Adult envoy of a tidal civilization
Series possibilities
- Sana is asked to map a planet that has formally withdrawn from its own solar system.



