Reach level 300 or higher
Go to Upper Skylands
Find the Lord of Destruction NPC
Buy Observation Haki for 750,000 Beli
Use Observation Haki by pressing the assigned key after unlocking it
Reach level 300 or higher
Go to Upper Skylands
Find the Lord of Destruction NPC
Buy Observation Haki for 750,000 Beli
Use Observation Haki by pressing the assigned key after unlocking it