Work Text:
Who Stole the Treasure on the Sunny?
Interactive Case File
The Straw Hats’ emergency treasure chest has vanished. Search the ship, gather witness statements, collect evidence, follow branching leads, uncover the hidden stash, and decide what really happened. Be advised: one crewmate is guilty of side crimes, one crewmate is technically innocent, one crewmate is suspicious, and Nami is being terrifyingly calm about all of this.
✦ ✦ ✦
Evidence Collected
Filed Evidence
Bite-marked coinOrange threadLedger impressionCipher slipCart grease ragWaxed grove clothSun fragmentTree fragmentLeft-star fragmentSecret compartment key
Inventory fills automatically as you investigate.
Case Progress
Crew Activity Log
Galley searchedDeck searchedMap room searchedLibrary searchedWorkshop searchedGrove searchedSanji loggedChopper loggedFranky loggedBrook loggedFragment IFragment IIFragment IIITimeline reconstructedHiding place tracedMotive testedSecret evidence found
Phase I: Search the Ship
Deck Search
Galley Kitchen
Galley searched ✓
Main Deck
Deck searched ✓
Nami’s Map Room
Map room searched ✓
Robin’s Library Nook
Library searched ✓
Workshop
Workshop searched ✓
Tangerine Grove
Grove searched ✓
Galley Kitchen: Sanji is furious enough to ignite. A tray of meat is missing, a cabinet hangs open, and there is a single gold coin on the counter with an unmistakable bite mark crushed into its edge. The pantry latch is slick with grease. Whatever happened here was loud, stupid, and very Luffy.
Main Deck: You find shallow drag marks from the storage hatch to the center deck, where they abruptly stop. After that: small wheel tracks. Somebody dragged a chest, then loaded it onto a cart. Caught on a splinter nearby is a frayed orange thread. There is no straw hat string here at all, which means at least one rumor currently circulating is complete nonsense.
Nami’s Map Room: A page has been torn from the ledger, but the writing impression remains in the paper beneath: switch the real chest before sunset. The desk contains a new lock receipt, an ink-smudged weather chart, and a key ring missing one small brass key. Nami either anticipated a theft or committed one preemptively.
Robin’s Library Nook: A book about substitution ciphers lies open. Inside it is a slip of paper in Robin’s neat handwriting with three copied symbols: sun / tree / left-star. There is also a fine orange fiber caught beneath the page edge. Robin is nowhere in sight, which feels less reassuring than it should.
Workshop: Franky’s transport cart is missing from its usual outline in the dust. Nearby rests a rag that smells like metal polish and citrus. Usopp’s toolkit has been disturbed. A false-bottom compartment inside the workbench is hanging slightly open, as if someone searched it quickly for a small tool or key and then tried to cover their tracks.
Tangerine Grove: Beneath one tree the soil has been disturbed—not freshly dug, but pressed and reset. Nearby is a square impression in the grass exactly the size of a chest corner. Behind the trunk, tucked into the roots, is a scrap of orange wrapping cloth coated on one side in weatherproof wax.
Phase II: Witness Statements
Witness Notes
Question Sanji
Sanji logged ✓
Question Chopper
Chopper logged ✓
Question Franky
Franky logged ✓
Question Brook
Brook logged ✓
Sanji: “Luffy came in at dawn dragging a smaller box and asked whether pirate snack funds could be converted directly into meat. I rejected the premise and kicked him out. So yes, he stole something. No, I do not think he masterminded a chest relocation with a cipher by himself unless hell froze over.”
Chopper: “Earlier Nami came to me with a splinter in her finger. She kept asking whether Robin had left the library yet. She also told me not to tell anyone she’d been there, which usually means I am already telling too much.”
Franky: “Yesterday somebody asked if the treasure lock could be opened without damaging the chest. Later I found scratch marks near the hinge like someone had tested the lock or a copy key. And my cart? Borrowed. Unapproved. Not SUPER.”
Brook: “At midnight, I heard two people on deck. One walked lightly. The other walked so calmly it became ominous. Then came wheels. Then whispering. Then someone said, ‘Left at the tree.’ I decided, in the interest of continued undeath, not to investigate. Yohohoho!”
Phase III: Cipher Fragments
Recovered Cipher
Fragment I
Fragment I ✓
Fragment II
Fragment II ✓
Fragment III
Fragment III ✓
Fragment I: Beside the sun symbol, someone wrote: start where all voyages are recorded.
Fragment II: Beside the tree symbol: what is safest is what is most obvious to its owner.
Fragment III: Beside the left-star symbol: from the center path, count one trunk left.
Notebook
Compiled Notes
Luffy handled a smaller box tied to meat theft, not necessarily the main chest.
The main chest was moved by hand, then by cart. Orange thread found on deck.
The torn ledger page implies the real chest was switched before sunset.
Robin prepared cipher symbols and had matching orange fiber near the note.
Someone used Franky’s cart and rummaged through Usopp’s workbench.
The grove shows signs of deliberate concealment, not a panicked dump.
Sanji clears Luffy of being the complete mastermind while confirming he committed theft.
Nami had a splinter and was checking on Robin’s movements.
The lock was tested in advance. This was planned, not impulsive.
Brook heard two people and the phrase “Left at the tree.”
The cipher begins from a place tied to navigation or recorded voyages.
The hidden place is “obvious to its owner.”
The final clue points directly to a tree location from a center path.
Timeline reconstruction suggests the switch happened before Luffy’s galley crime, which later muddied the evidence.
The cipher and grove evidence together strongly imply relocation, not external theft.
The motive may have been protection of the real chest rather than greed.
A missing brass key and hidden compartment evidence suggest there is still one layer of the truth left buried.
Suspect Board
Persons of Interestsuspect
Supplemental profiles compiled from crew nonsense, evidence, and vibes.
Luffy
Luffy card ✓
Nami
Nami card ✓
Robin
Robin card ✓
Usopp
Usopp card ✓
Zoro
Zoro card ✓
🍖
Monkey D. Luffy chaotic
Evidence places him at the scene of a different crime. Loud. Greasy. Bite-marked. Emotionally committed to theft, but not built for quiet conspiracy.
💰
Nami high priority
Possesses the strongest logistical profile. Ledger note, missing key, grove access, and a distressingly plausible ability to outmaneuver everyone on board.
📚
Robin
Connected to the cipher. Probably knows more than she says. Her level of calm is either innocence or the sort of serenity only achieved by people who have already hidden the body.
🔧
Usopp
Workshop disturbance suggests his tools were used or searched. Could be implicated. Could also simply be living in the blast radius of everyone else’s terrible decisions.
🗡
Zoro
Possible involvement remains low unless the chest somehow got lost and accidentally found him first.
Phase IV: Follow the Leads
Reasoning Paths
Branching leads locked. Search every room, log every statement, and gather every cipher fragment first.
Core investigation complete. Choose which line of reasoning to pursue.
Reconstruct the Timeline
Timeline done ✓
Trace the Hiding Place
Hiding place traced ✓
Test the Motive
Motive tested ✓
Timeline Reconstruction: The chest was switched before sunset, meaning before Sanji’s dawn argument with Luffy. That makes Luffy’s meat-fund stupidity a later distraction, not the main event. Someone planned ahead, acquired or tested access to the lock, borrowed Franky’s cart, and relocated the real chest while leaving a decoy or empty shell in its place.
Trace the Hiding Place: Starting from the map room—the place where voyages are recorded—the cipher moves conceptually to the grove, where what is “most obvious to its owner” would be Nami’s own treasured trees. “From the center path, count one trunk left” points not just to the grove in general, but to a specific tree. The waxed cloth implies weatherproof concealment rather than temporary panic.
Test the Motive: If the lock had been tested, the real threat was not internal greed but an anticipated theft. Relocating the chest before anyone else could take it would protect the crew’s money. Robin’s cipher assistance fits helping a friend secure something. Nami’s behavior stops looking like embezzlement and starts looking like paranoid disaster management—which, for Nami, is basically an expression of love.
❈
seal opened ✓
Secret Evidence: The missing brass key fits a hidden latch inside Nami’s map desk. Inside that compartment is a folded note in Robin’s hand: Moved exactly as requested. Real chest secured in grove. Decoy left in place. If Luffy finds the decoy first, that is between him and destiny. There is also a tiny penciled annotation below it in Nami’s hand: Better he steals the fake one than let someone else test the real lock again.
Final Theory
Verdict
Accusation locked. Complete all three lead paths first.
Choose your conclusion. The file locks after one selection.
Accuse Luffy
Accuse Robin
Accuse Nami
Accuse Nami & Robin
Accuse Zoro Somehow
Wrong. Luffy absolutely stole a box. It was just not this box. He committed a side quest crime involving meat, bad judgment, and probably chewing on currency. He is guilty, but not of the main incident.
Partly right. Robin did help create the cipher and probably assisted with the relocation, but she was not acting alone or for personal gain. This conclusion catches the accomplice while missing the motive and the actual owner of the plan.
Mostly right. Nami orchestrated the relocation of the real chest, but calling it “theft” is technically false. She moved it to protect it after realizing the lock had been tested. You have the culprit, but not the full shape of the truth.
Good ending. resolved Nami and Robin moved the chest together. Nami planned the relocation after suspecting the treasure was vulnerable. Robin helped encode the hiding place. Luffy’s unrelated snack-fund robbery muddied the case. You solved the practical truth, even if not every last detail.
Wrong, but brave. Zoro did not steal the treasure chest. He may, however, be asleep thirty feet away from it by sheer coincidence and impossible navigation physics.
Supplemental Addendum
The case file has room for one final correction.
Present the Full Truth
True ending. corrected No one truly “stole” the treasure from the crew. Nami discovered that someone had tested the lock on the emergency chest. Before sunset, she secretly switched the real chest out, borrowed Franky’s cart, hid the real treasure in the grove, and had Robin encode the exact location in case something happened to her. Robin’s note confirms she helped as requested. Meanwhile, Luffy found the decoy or secondary box later and committed his own separate meat-motivated theft, scattering stupid evidence all over the galley and making the entire investigation look like a pirate clown show. The full truth is this: Nami stole the treasure only from the possibility of being stolen, Robin helped her do it, and Luffy accidentally became the world’s worst red herring.
Case Footer
Closing Note
Status: misfiled / hilarious / crew-typical.
Case file closed. Nami gets her money back, Robin gets to be smug, Sanji gets to be dramatic, and Luffy learns absolutely nothing.