Tear of the Sea is an A-Rank Consumable in Neverness to Everness, described in-game as a drop of red liquid taken from Sea Prisoners. It exists for one main reason, which is to serve as Character Ascension Material for certain characters.
Quick answer: Defeat the Sea Prisoner Anomaly Commission once to unlock it as an Anomaly Hunt boss, then farm that boss to collect Tear of the Sea. You can also obtain it by opening a Material Selection Box.

Tear of the Sea item details
This is a farmable upgrade material rather than a one-off reward. Quick Use is disabled, so it stays in your inventory until you spend it on ascension.
| Property | Detail |
|---|---|
| Rarity | A-Rank |
| Type | Consumable |
| Quick Use | Disabled |
| Main use | Character Ascension Material |
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There are three routes to add this material to your stock. The repeatable boss farm is the most reliable source for steady supply.
| Source | Notes |
|---|---|
| Anomaly Hunt: Sea Prisoner | Repeatable farm after you complete the commission once |
| Open Material Selection Box | Select it as a reward when opening the box |
| Anomaly Hunt Material Selection Box ×1 | Source item that can yield Tear of the Sea |
| Auction | Base 3,000, Expected 9,000 |

Unlock the Sea Prisoner Anomaly Hunt first
Before you can farm Tear of the Sea, you have to clear the Sea Prisoner Anomaly Commission. Completing it unlocks Sea Prisoner as an Anomaly Hunt boss, which is the repeatable node you return to for the material.


The one-time commission payout includes the Song of the Whale S-Rank Arc, 300 Hunter Level EXP, 40 Annulith, 15,000 Fons, 80 Carrotas, 30 U-00NE, 7,500 Beetle Coins, and five Anomaly Material Selection Box I.
How to confirm it worked
You know the unlock succeeded when Sea Prisoner appears in your Anomaly Hunt list as a repeatable boss. From there, each successful run can reward Tear of the Sea, which you then spend on Character Ascension to raise level caps for the characters that require it.
Note: If Sea Prisoner is not showing as an Anomaly Hunt, you likely have not finished the commission yet. Run the Nautili Tunnel route in a car and defeat the boss to register the clear.






