To learn Haki in Blox Fruits, start by buying Aura (Haki). Head to the Ability Teacher in the First Sea. You can find this NPC in a cave at Frozen Village or near the Magma Village quest-giver. It costs $25,000 to purchase.
Once you have Aura (Haki), activate it by pressing the designated hotkey, usually ‘J’ on the keyboard. To gain experience points, take hits and deal damage. Let an NPC hit you and strike back without using mastered weapons.
Continue training to level up your Haki. Use your main melee weapons to boost your Buso Haki. For Ken Haki, focus on dodging attacks to level up faster.
To manage your Haki abilities, visit the Aura Editor. This NPC is found in different locations based on the sea you are in. Customize and level up your Haki here.
By following these steps, you can unlock and master the powerful Haki abilities in Blox Fruits. Enjoy your enhanced combat skills and dominate the game!