Blox Fruits Second Sea: the level 700 route without the detour

Reach level 700 in the First Sea, then follow the Detective’s key through Frozen Village. The captain cannot replace the quest.

Route: Prison → Frozen Village → Prison → Middle Town → Second Sea.

1. At level 700 or higher, visit Military Detective at the entrance to Prison. Talk to him and take the key.
2. Sail to Frozen Village. Enter the cave with the Ability Teacher and find the locked wooden door inside. Equip the key and use it on the door.
3. Defeat Ice Admiral behind the door. Keep moving and watch his attacks; if you lose, recover and try again rather than rushing past the fight.
4. Return to the Detective at Prison and speak to him again. Then go to Middle Town and ask the Experienced Captain to take you to Second Sea.

Captain won’t take you?

Check your level first, then retrace the key, door and boss steps. The door is inside the cave, not at its entrance. If you left after receiving the key, speak to the Detective again and check your inventory before sailing back. Some community guides say the return visit can be skipped; this route includes it to make the handoff clear.

Once you arrive, use local quests to get used to stronger enemies before venturing farther.

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https://blox-fruitswiki.com/wiki/second-sea/accessing/ | https://www.bloxfruitshub.com/guides/second-sea-level-700