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Sirena Isle Resort — Complete System Guide

Activities & BusinessesSimplified Chinese availableV0.9.6.0
Guide noticeThis page contains gameplay and story spoilers and may describe mature systems.

Sirena Isle is a late-game vacation destination connected to the Rose & Thorn, Marina's fishing operation, Sashimi's storyline, worker management, and the Sea Shell economy. Once unlocked, the player can visit freely, send up to three eligible workers on vacation, trigger character-specific resort scenes, explore the island cavern, and spend Sea Shells at Shelly's Gift Shop.

This guide was inspired by the community-created Sirena Isle Resort wiki page by Sh1n7 and then expanded and verified against the current game source.

Version note: Sirena Isle is paid-version content. Its unlock and travel actions require the appropriate content access.

Table of Contents

Quick Unlock Checklist

To unlock Sirena Isle:

  1. Own the Rose & Thorn and build its Courtyard and Pool.
  2. Reach Dungeon Floor 13 and complete three Sashimi water encounters.
  3. Catch at least 25 fish in one fishing session while the Pool is built.
  4. Finish the resulting Sashimi Fishing Discovery scene so Sashimi moves into the Pool.
  5. Raise Sashimi to Friend.
  6. Visit the Pool from 9 AM to 7 PM to receive The Beast Between Worlds, her Void Leviathan quest.
  7. Visit the Pool again from 9 AM to 7 PM for An Island in Mind.
  8. Visit Marina at the Fishing Hut and choose Boat to Sirena Isle.
  9. Pay $1,000,000 and spend 120 minutes to complete the introductory voyage.

You do not have to catch the Void Leviathan before unlocking the island. Sashimi's island proposal requires you to have completed the conversation that starts the Leviathan quest.

Complete Unlock Walkthrough

Step 1: Build the Rose & Thorn Pool

Sashimi eventually needs somewhere suitable to live. The Pool therefore has to be built before the fishing system can move her out of the dungeon.

The construction chain is:

  1. Own the Rose & Thorn.
  2. Build the Courtyard through Gastoff.
  3. Reach the required brothel reputation and build the Pool.

See the Brothel guide for the current construction costs and facility prerequisites.

Step 2: Meet Sashimi Three Times

Explore the water-themed Dungeon Floor 13 until you have completed three Sashimi encounters. The game records these encounters in a counter; all three are required for her fishing discovery.

Because dungeon scenarios are randomly selected, repeat Floor 13 until the counter is satisfied.

Step 3: Catch 25 Fish in One Session

Take Marina's fishing boat and finish a single session with 25 or more fish caught.

This is a per-session requirement. The fishing ledger's lifetime total does not satisfy it by itself.

When Marina processes the catch, the game checks all three conditions together:

  • 25+ fish in that session
  • Three Sashimi water encounters completed
  • Rose & Thorn Pool built

If they are all true and Sashimi has not already moved in, Sashimi Fishing Discovery begins. Complete the scene to make Sashimi a resident of the Pool.

If catching 25 fish is difficult, improve the boat timer, rod, bait supply, ring bonuses, and reeling hit zone through the Fishing guide's upgrade paths.

Step 4: Befriend Sashimi

Visit Sashimi at the Rose & Thorn Pool and raise her relationship to Friend. Her resort chain does not begin at the earlier relationship stages.

Step 5: Start the Void Leviathan Quest

At Friend or higher, enter the Pool between 9 AM and 7 PM. The auto-trigger plot The Beast Between Worlds has Sashimi tell you about the Void Leviathan and activates its fishing quest.

The plot must finish, but the Leviathan does not need to be caught for the next step.

Step 6: Hear Sashimi's Island Proposal

Return to the Pool between 9 AM and 7 PM after completing The Beast Between Worlds. The auto-trigger plot An Island in Mind introduces Sirena Isle and directs you to Marina for a boat.

Step 7: Purchase Permanent Access from Marina

Go to Marina at the Fishing Hut Interior and select Boat to Sirena Isle.

Requirement Value
Cost $1,000,000
Time 120 minutes
Required plot An Island in Mind completed
Content access Paid-version content required

The introductory voyage brings you to the island and introduces Uhura. Completing it permanently unlocks the vacation system.

Travel and Island Map

After unlocking the island, Travel to Sirena Isle becomes available from:

  • The Rose & Thorn Pool
  • Marina's Fishing Hut Interior

The outward trip takes 45 minutes. Returning to the Rose & Thorn Pool from the island entrance takes 30 minutes.

Sirena Isle disables the normal world map and uses its own connected locations:

Location Important Features
Entrance Return boat; paths to the main resort locations
Beach Worker Relax scenes, Sunset Walks, Private Beach Time, cave and water-rock routes
Buffet Free player meal; worker Eat scenes
Bedroom Six-hour Sleep action; possible worker sleep scene
Spa Worker Spa Night scenes
Gift Shop Shelly and the Sea Shell shop
Water Rock Sashimi and island-specific scenes
Cave Exterior Route between the beach and cavern interior
Cave Interior Repeatable Search Cavern action

Swimming from the Beach to the Water Rock costs 15 minutes and 15 Energy. Swimming back takes 15 minutes.

Sending Workers on Vacation

Vacation assignments are managed from the Rose & Thorn's worker-room management interface after the system is unlocked.

The island has three vacation slots. To send a worker:

  1. Open the Worker Rooms management screen.
  2. Select the Sirena Isle specialty tile.
  3. Choose an eligible active worker for an empty vacation slot.

A worker can be assigned when she:

  • Is on the curated Sirena Isle eligibility list
  • Is currently active as a worker
  • Is not already vacationing
  • Is not assigned as an apprentice to another service room

A worker who is the master of another room may still be sent. Apprenticeship and vacation are mutually exclusive.

Workers remain on vacation until you remove them from their slot. Vacation is not a fixed one-day action.

Vacation Effects

At daily brothel processing, each vacationing worker:

  • Earns no income
  • Serves no clients
  • Produces no mess
  • Gains no normal work EXP or Fame
  • Is excluded from normal brothel events and room work
  • Gains +25 Loyalty, up to 150
  • Loses 40 Stress, down to 0
  • Restores 40 Health, up to her maximum
  • Has normal loyalty decay paused while away

Vacation is therefore excellent for repairing a badly stressed or injured worker and for raising loyalty beyond its ordinary 100-point range. The tradeoff is losing that worker's production for every daily report she spends away.

Vacationing characters are also removed from their normal NPC schedules. Bring them home if you need an interaction or plot that occurs at their usual location.

Finding Vacationing Workers

Assigned workers can randomly appear at:

  • Beach
  • Buffet
  • Bedroom
  • Spa

They can appear from 7 AM until 11 PM. The presence roll happens when you newly enter one of those locations.

The chance is based on the number of workers currently vacationing:

Vacationers Appearance Chance per New Arrival
1 25%
2 50%
3 75%

If nobody appears, leave for a different island location and return. Remaining on the same location screen does not create a fresh arrival roll.

Only the currently selected worker appears in that room, even when multiple workers are vacationing. One-time pair, trio, and island-NPC scenes can still trigger based on the complete vacation roster rather than the visible worker.

Worker Resort Activities

When a vacationing worker appears, she always offers a resort-specific Talk action and may offer location- and time-specific activities.

Activity Location Hours Time Frequency Main Reward
Talk Any presence location 7 AM–11 PM 15 min Up to 6/day per worker +1 base relationship point
Relax Beach 8 AM–4 PM 60 min Once/day per worker Character plot, relationship points, +50 Energy
Private Beach Time Beach 10 AM–6 PM 60 min Once/day where available Video scene, +50 base relationship points
Eat Together Buffet 11 AM–4 PM 60 min Once/day per worker Character plot, relationship points, +100 Satiation
Sunset Walk Beach 5 PM–8 PM 60 min Once/day per worker Repeatable H2H relationship scene
Spa Night Spa 7 PM–11 PM 60 min Once/day per worker Character plot, relationship points, +25 Health/Energy/Calm

The ending hour is exclusive: for example, Eat Together is available from 11:00 through 15:59, not at 16:00.

Relax, Eat Together, Spa Night, Sunset Walk, and supported Private Beach Time scenes each roll a 25% chance to award 1 Sea Shell when completed.

Private Beach Time is only available for workers who have a corresponding video scene. Its absence for another eligible worker is intentional rather than an unlock failure.

Automatic Resort Scenes

The resort also contains many one-time scenes involving:

  • Two vacationing workers
  • Three vacationing workers
  • A vacationing worker and an island resident
  • Character-specific island discoveries

These check the assigned vacation roster, the island location, the time, and whether the scene was previously completed. Try different worker combinations and revisit the Beach, Buffet, Spa, Entrance, Gift Shop, and Water Rock at different hours.

Other Island Activities

Eat at the Buffet

The Buffet's normal Eat Buffet action costs 25 minutes and restores 100 Satiation. This is separate from the one-on-one Eat Together character scene.

Sleep in the Resort Bedroom

The Bedroom's Sleep action costs 360 minutes and fully restores Health, Energy, and Calm.

At night, sleeping may also display a special scene with a vacationing worker. The sleep-scene window is 7 PM through 6:59 AM. If the worker currently visible in the Bedroom has a supported scene, she is preferred; otherwise the game checks the other vacationers.

Visit Sashimi's Water Rock

Swim to the Water Rock from the Beach for Sashimi- and island-related plots. The journey out costs 15 Energy, so do not arrive completely depleted.

Sea Shells

Sea Shells are Sirena Isle's special currency. Your current total appears in Shelly's Gift Shop and can also be used in at least one dungeon trade.

Primary repeatable sources are:

  • 25% chance for 1 shell after eligible worker resort activities
  • Cavern shell discovery: 1–3 shells
  • Cavern battle: 40% chance for 1 shell after defeating the encounter
  • One-time resort pair, group, and island-NPC scenes, which also use the standard 25% activity reward roll

For reliable long-term farming, combine daytime worker activities, the Sunset Walk, a Spa Night, and cavern searches rather than depending on only one source.

Shelly's Gift Shop

Shelly accepts Sea Shells for permanent player upgrades, worker and maid equipment, a monster-taming tool, and Queenstone improvements.

Item Cost Repeatable? Effect
Sirena Vibes 50 Yes Worker item: loyalty cannot decrease and grows +1/day up to 150
Claw 50 No Monster tool: allows taming beyond the normal cap, up to 150/100
Heart of the Ocean 75 No +50 maximum Health, Energy, and Calm
Ocean Fragrance 60 No +1 maximum relationship points from neutral NPC interactions
Jock Shell 50 No +1 effective armor level
Poseidon Trident 100 No Physical attacks have a 15% chance to deal double damage
Mermaid Magic 100 No Combat magic has a 15% chance to deal double damage
Sea's Approval 60 No Maid item: +1 Brothel Decor and +1 Promotion while equipped
Pearl Necklace 120 No Worker item: +2 daily clients and double income
Snail Slime 10 Yes Raises an owned Queenstone's potency by +1 level

Snail Slime only appears if you already own a Queenstone. Non-repeatable purchases remain visible after purchase but cannot be bought again.

Suggested Purchase Order

There is no universal order, but these are strong priorities:

  1. Heart of the Ocean for broad survivability and resource capacity.
  2. Poseidon Trident or Mermaid Magic, depending on your combat build.
  3. Pearl Necklace for the strongest worker-economy effect.
  4. Ocean Fragrance if relationship progression is still a major goal.
  5. Jock Shell for a consistent defensive improvement.

Sirena Vibes is repeatable, but a worker cannot produce income while vacationing. Buy it for important workers after securing the unique player upgrades.

Sirena Cavern

From the Beach, travel to the Cave and then enter the Cave Interior. Search Cavern costs:

  • 45 minutes
  • 15 Energy

Every search also has a 2% chance to raise Luck by 1.

Search Outcome Table

Outcome Group Chance Result
Enemy 40% One of 12 underwater enemies; fight or flee
Other discovery 40% Pickaxes, Sea Shells, or gold bag at equal odds
Nothing 20% No additional reward

Each of the three Other discoveries therefore has approximately a 13.33% chance per search.

Enemy Encounters

The cavern has 12 enemy types with multiple visual variants. Quick Attack, Strong Attack, and Elemental Blast all defeat the encounter; the choice changes the presentation rather than testing a combat build.

Winning costs independently rolled damage:

  • 5–50 Health
  • 5–50 Energy
  • 5–50 Calm

Each resource stops at a minimum of 1. After winning, there is a 40% chance to find 1 Sea Shell.

Choosing Flee avoids the battle damage and additional battle reward. The initial Search Cavern time and Energy cost have already been spent.

Pickaxe Bundle

Taking the abandoned bundle grants:

  • 2–5 Iron Pickaxes
  • 2–4 Copper Pickaxes
  • A Luck-based chance for 1 Diamond Pickaxe

The Diamond Pickaxe roll succeeds when a random number from 1–120 is no higher than your effective Luck.

Shell Crevice

The shell discovery grants 1–3 Sea Shells immediately.

Gold Bag

The bag grants:

10–30 gold + (2 × effective Luck)

Shell-Farming Odds

A search can award shells through two mutually exclusive paths:

  • Direct shell discovery: about 13.33%
  • Enemy encounter followed by its 40% drop: 16%

Combined, a Cavern search has about a 29.33% chance to award at least one Sea Shell, before considering the different quantities from the direct shell discovery.

Eligible Workers

The current resort-eligible roster is:

Worker ID Worker Worker ID Worker
1 Elara 14 Gem
2 Sophie 15 Jade
3 Honey 17 Brandy
4 Sandra 18 Willow
5 Grace 19 Vixen
7 Raven 20 Kasumi
8 Shadow 21 A.R.I.A.
9 Foxy 22 Vespa
10 Bellavia 23 Audrey
11 Valkyra 26 Momosagi
12 Lindia 28 Maize
13 Ava and Eva 29 Pepper

An active worker who is absent from this table cannot currently occupy a vacation slot.

Efficient Recovery Vacation

  1. Send up to three high-stress or injured workers before ending the day.
  2. Accept the lost income for that daily report.
  3. Let each worker receive +25 Loyalty, −40 Stress, and +40 Health.
  4. Bring recovered workers home and rotate in the next group.

Efficient Resort Day

With at least one worker vacationing:

  1. Enter resort presence rooms after 7 AM until the worker appears.
  2. Use Relax at the Beach between 8 AM and 4 PM.
  3. Use Eat Together at the Buffet between 11 AM and 4 PM.
  4. Use Private Beach Time before 6 PM if that worker supports it.
  5. Use Sunset Walk at the Beach between 5 PM and 8 PM.
  6. Use Spa Night from 7 PM to 11 PM.
  7. Fill unused time with Cavern searches and the free Buffet action.
  8. Sleep in the Bedroom for a full restore and a possible vacationer scene.

Best Shell Priorities

Do not spend every early shell on repeatable equipment. Save for the unique 75- and 100-shell player upgrades first unless a particular worker item is central to your economy.

Troubleshooting

Boat to Sirena Isle does not appear at Marina

Confirm that:

  • Sashimi lives at the Rose & Thorn Pool.
  • Sashimi has reached Friend.
  • The Beast Between Worlds completed.
  • An Island in Mind completed.
  • You have not already completed Marina's Sirena Isle boat plot.
  • Your game has access to the paid Sirena Isle content.

Sashimi Fishing Discovery does not trigger

The check occurs when Marina processes fishing results. You need all of these at that moment:

  • Three Sashimi dungeon-water encounters
  • Pool built
  • 25 fish caught in that one session
  • Sashimi not already moved to the Pool

A worker cannot be assigned

Check that she is:

  • On the eligible roster
  • Active
  • Not already at the resort
  • Not assigned as an apprentice

Also confirm that one of the three vacation slots is empty.

No worker appears on the island

Workers only roll into Beach, Buffet, Bedroom, and Spa from 7 AM to 11 PM. Enter a different room and come back to generate a new arrival roll.

A specific resort activity is missing

Check its location and time window. The vacationing worker must also be the person currently rolled into that room. Private Beach Time additionally requires that worker to have a supported video scene.

Snail Slime is missing from the Gift Shop

Snail Slime is hidden until the player owns a Queenstone.

  • Fishing — Complete System Guide for Sashimi, Marina, fishing upgrades, and the Void Leviathan
  • Marina — Complete Walkthrough for Marina's relationship and boat upgrades
  • Brothel — Complete System Guide for ownership, the Courtyard, Pool, workers, and room management
  • Caterpillar Rearing — Complete System Guide for the Caterpillar Bait fishing upgrade
  • Wealth Guide for raising the $1,000,000 island-access cost
Community discoveries

These official guides track the current game. The player-maintained wiki may contain additional strategies and discoveries.

Visit Player Wiki →