Tears of Themis Island Suspense event: Deciphering encryptions


The Island Suspense event in Tears of Themis is something a bit different from the other special events we’ve seen in the game’s five-year history. Following on from the Gladiolus Valley arc, it’s the first ToT event that also forms an important part of the main story and, thus, will be available permanently beyond its initial run, ensuring that new players or those who are behind on the plot don’t miss out.

However, there are still time-limited rewards associated with Island Suspense’s initial duration, alongside several permanent rewards. Many rewards of both types are connected to the encryption codes you can find hidden within the event itself as well as in event trailers and on HoYoverse’s social media. Read on for every encryption cipher in Tears of Themis’ Island Suspense event, where you can find it, and what its decrypted message reads.

There are a total of 90 entries under the Clue Collection > Encryption category in the Island Suspense event terminal, of which 69 (obligatory: nice) can be unlocked by entering a cipher text into the Deciphering menu.

Thus far, 47 of the 69 (again, nice) encryption codes have been uncovered – and, though we list them here, you’ll want to track them down yourself in-game as well if you want to fill out the remaining 21 entries to complete your Encryption codex by the end of the event.

Cracking all (I’m not doing it this time) 69 ciphers satisfies the conditions of “Painstaking Investigator” permanent event task, which also awards you with 10,000 Stellin for your trouble. So for clarity, there’s no time pressure to complete all decryptions by October 17th, 2025 when the limited-time event expires; whenever you’re reading this guide, as long as Tears of Themis servers are still online, you can still plug all of these codes into the in-game Deciphering device and enjoy the rewards.

Cipher Code Decrypted Message Where to find 1018 My head itches, is something about to happen? Or is the event… about to end…? Please check the supplies prepared for you (2/3): 4B4JWV05RQ Island Suspense Event Trailer + social media updates 1024 HELLO WORLD! Story Stage: “Clue Collection: Carefree Communication Device” (under Intel – Other) 112358A The street-side pothos plants on Zhenyi Street appear abnormal. Hotel – Outside the Hotel Investigation Point (street utility poles) 3330EE The rose bushes in the hotel’s floral greenhouse are behaving oddly. Modern Era Hotel – Hotel Guest Room Investigation Point (sofa) 3RE2FA There’s something unusual about the sofa in the hotel lobby. Oracle Research Institute Investigation Point (fountain) Adjudicator You are my once-in-a-lifetime heartbeat. Cipher File Special Delivery II on social media (Vyn’s codename) ANGEL ANGEL Radio, your number one choice! Traffic and weather reports, popular songs, come here for first-hand info! Island Suspense Event Trailer + social media updates BLDR With the sound of Xuanni, the three giants make their appearance! Cipher File Special Delivery III on social media BTI Beneath the Ice. Even outsiders have a right to survive. Complete Marius’ assist action during Island Suspense Story Stage 1-06 BS Between Shades. When blazing flames are extinguished, ashes will eventually bury greed. Complete Vyn’s assist action during Island Suspense Story Stage 1-07 CFSD To the meticulous you: meticulous as always. Cipher File Special Delivery II on social media DAVIS Today’s fortune: *°*\(>v<)/*°* No specific source, HoYoverse just anticipated you might try this! DOREMI The guardian beast at the entrance of the sanatorium seems abnormal. Shallow Water Harbor – Wharf Investigation Point (ships in harbor) EASTEREGG The meaning is literal — this is an Easter egg. Island Suspense Event Trailer + social media updates HW Heart’s Warden. Rock Chasm Point is a place of both peril and adventure. Complete Luke’s assist action during Island Suspense Story Stage 2-05 KEYCAFE The hidden investigation point at the coffee shop is at the succulent plant pot. KEY + CAFE (Coffee Shop map code) KEYFST The hidden investigation point at Zhenyi Street is in the street-side pothos. KEY + FST (Zhenyi Street map code) KEYINN The hidden investigation points at the hotel are: the nightstand in the guest room, and the awning in front of the hotel. KEY + INN (Hotel map code) KEYMEHTL The hidden investigation points of the Modern Era Hotel are at: the sofa in the hotel lobby, the rose bushes in the floral greenhouse, and the lampshade in the guest room. KEY + MEHTL (Modern Era Hotel map code) KEYNLS The hidden investigation point at the New Life Sanatorium is the guardian beast at the entrance. KEY + NLS (New Life Sanatorium map code) KEYORI The hidden investigation point of the Oracle Research Institute is at the glass window at the entrance. KEY + ORI (Oracle Research Institute map code) KEYSHBR The hidden investigation points at the Shallow Water Harbor are at: the seabird on the dock, the lifebuoy on the deck, and the bunk bed board in the cabin. KEY + SHBR (Shallow Water Harbor map code) King I’ll spend my life sketching your image. Cipher File Special Delivery II on social media (Marius’ codename) LB Stellis Long Beach – Now offering a service line for foreign nationals, breaking the language barrier, helping with job hunting, residence, buying a home, and even catching a mistress. Whatever you need, we can help! Cipher File Special Delivery III on social media Libra Thank you for bringing another possibility into my life. Cipher File Special Delivery II on social media (Artem’s codename) MAPOFSTELLIS The wind that misses you has blown to Stellis. Cipher File Special Delivery III on social media MARIN22 The spare life ring on the front deck looks suspicious. Shallow Water Harbor – Ship Cabin Investigation Point (diary on table) MASTERKEY This is a universal cheat key. Enter KEY + location code to receive hints for all hidden clues at that location. Story Stage: Daily Exploration 1 (“Intel provided by Zangr Stewart”) MI31 The seabirds at the Shallow Water Port dock are acting strangely. New Life Sanatorium Investigation Point (birds) NXX The most important thing is for a family to live a good life together. Cipher File Special Delivery II on social media NXXIS Everyone from NXX, please take care of your safety. Operation Xinjiga will soon be completed! Please accept the supplies prepared for you (3/3): GTSRCRAZ4Z Island Suspense Event Trailer + social media updates NXXISLANDSUSPENSE NXX Investigation Team, ready and assembled! Xinjiga Secret Information event prelude minigame OS Orchidshine Idle Villa Butler Recruitment: The employer is often away for business and needs a butler to manage the villa. Age requirement: under 50 years, reliable, responsible, and of good character. Interested parties, please contact. Cipher File Special Delivery III on social media OSHZXN There’s something off about the glass windows at the research institute. Modern Era Hotel – Hotel Lobby Investigation Point (coffee table) PERIL There’s an anomaly in the succulent potted plants at the coffee shop. Hotel – Inside the Hotel Investigation Point (upper wall) PV0221KM016155 I, the super cool little sports car, am back again. Island Suspense Event Trailer + social media updates Raven I want to explore the whole truth with you. Cipher File Special Delivery II on social media (Luke’s codename) ROSES There’s something unusual inside the lampshade in the hotel guest room. Modern Era Hotel – Floral Greenhouse Investigation Point (left-hand flowers) SHB Shadowed Boundaries. A mahjong parlor has always been the perfect place to hide secrets. Complete Artem’s assist action during Island Suspense Story Stage 2-06 SOS2A There’s something strange inside the awning at the hotel’s entrance. Zhenyi Street – On the Street Investigation Point (bus license plate) SSC South Stellis Rentals – 5 stations to the Waterfront! Fully renovated one-bedroom apartment for rent, pet-friendly, only 5k. Cipher File Special Delivery III on social media STELLIS Family, friendship and love — may you have all the beauty in life. Cipher File Special Delivery III on social media TEARSOFTHEMIS Unraveling love and mystery together! No specific source, HoYoverse just anticipated you might try this! TOT Tears of Themis? No! It’s the god of wine drops. If you’re going to invest, invest ten! No specific source, HoYoverse just anticipated you might try this! TRIP9 The bedside table drawer in the hotel’s guest room contains something unusual. Coffee Shop Investigation Point (window) WTRFNT Waterfront TOD Your best choice for home purchase, start your efficient and quality life here! Cipher File Special Delivery III on social media WRECK010 There’s something strange under the bunk bed in the ship’s cabin. Shallow Water Harbor – Deck Investigation Point (deck railing) Xinjiga Welcome to Xinjiga Island! Please check the supplies prepared for you (1/3): NUJRJRZP0E Island Suspense Event Trailer + social media updates XJG0930 September 30. Did you just say September 30? That’s right! Today, let’s find out what event starts on that day. Here’s the thing: there’s indeed an event on September 30, but what is it? I’m also wondering. Island Suspense Event Trailer + social media updates

In order to decipher the encrypted codes, go to the Island Suspense event page in Tears of Themis. This can currently be accessed via the icon on the game’s main screen during the limited-time portion of the event, but will be permanently accessible from the X-Note > Events menu as well.

From the event landing page, select the Terminal icon on the bottom left of the screen.

Choose Deciphering from the options given on this menu, then enter your cipher text into the text box and click Decrypt.

If you’re having difficulty getting a cipher to register, try retyping it into the deciphering box yourself, as I’ve experienced some issues with copy+pasted text not being correctly registered by the game.

(Also be aware that — at least on Android devices like mine — your phone will probably get confused and try to save every cipher as a password; it’s annoying but you can safely just ignore it.)

For a more traditional codes list — including the ones unlocked via some of the ciphers listed above — see our Tears of Themis codes page. If you’re still getting caught up on the main story, you might also like our Tears of Themis Episode 15 walkthrough, which covers the most recent main story chapter that came out in August.



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