Turns Operation Siren currency into selected upgrade materials through port shops and Akashi’s merchant stock.
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WHERE & HOW TO FARM
Where to farm
Operation Siren ports → port shop; Mysterious Merchant Akashi when available.
Operation Siren port shops and Mysterious Merchant Akashi convert stored operation currency into useful supplies. Check the stock after map activity and buy items that match current Gear Lab or progression needs. Stock differs by shop, and purchases cost their listed currencies; this is a collection and spending loop rather than a drop farm. Avoid spending on items that are already capped or irrelevant to your account.
Unlock Operation Siren and reach a port with an accessible shop.
Have the relevant Operation Siren currencies available.
Know which Gear Lab materials or progression items your account needs.
Check current stock and personal caps before buying.
Open the Operation Siren map and travel to an accessible port.
Open that port’s shop and inspect its listed materials, prices, and purchase limits.
Compare the stock against your Gear Lab recipes and current upgrade bottlenecks.
Buy the useful items with the matching currency, leaving enough for higher-priority stock if needed.
Check for Mysterious Merchant Akashi when she appears and review her separate inventory.
Skip supplies you have capped or do not plan to use, then return to exploration and collect more currency.
Revisit shops after their stock changes and repeat the same needs-based purchase check.
Farming tips
The farming reference recommends clearing Blue Port shop stock when useful; treat that as a broad inventory check, not a reason to buy materials you cannot use.
If your Adaptive Tuning is already capped, avoid spending on tuning supplies unless the game’s current display shows a reason to do so.
Repeat, collect and use
Shop purchases are limited by stock and currency. Recheck during the Operation Siren cycle as stock refreshes or new merchant visits become available; this is not a guaranteed drop loop.
Common mistakes
Buying everything without checking currency and account needs; prioritize materials tied to planned Gear Lab upgrades.
Purchasing repairs or tuning items when already capped or fully stocked; inspect inventory first.
Confusing port-specific stock with Akashi’s merchant inventory; review each shop separately.
When to stop or switch
Stop shopping when your planned materials are covered or remaining stock has no use; return to map activities that earn the currencies you still need.
