Haki are a kind of skill booster that can improve your stats by up to 25% or improve your evasion. If you don't activate them it will put you at a disadvantage so you must activate them and level them up. Discover in this post by Itruco how to get the Haki of Blox Fruits, your favorite game of Roblox.
Buy the Haki Ken (Observation)
To unlock the Haki Ken the first thing is to reach level 300 and kill the Know Expert.
Second, go to the second upper courtyard area. It is the highest sky island in the game.
Find the Lord of Destruction NPC and give him 750.000 Beli and you will unlock the Haki Ken
To level it up to V2 you must go to the Third Sea after level 700