Hakari is the strongest combat style available in Rogue Piece, a fighting system drawn from the Jujutsu Kaisen universe. Obtaining it requires grinding the Hakari boss repeatedly and accumulating specific items before you can claim the ability from an NPC instructor.
Quick answer: Trade 77,777 gems, 77 King Cards, 77 Queen Cards, 77 Joker Cards, and the Restless Gambler title to Hakari's Teacher at Rogue Town to unlock the Hakari combat style.
What you need to gather
Before approaching Hakari's Teacher, you must collect five distinct items. The most straightforward requirement is 77,777 gems, which you can earn by redeeming active game codes, completing quests from NPCs scattered across all islands, opening chests obtained through quest rewards, or defeating mob bosses and raid bosses that drop gems randomly.
The three card types—King Cards, Queen Cards, and Joker Cards—all drop from the Hakari boss with a 50 percent chance each time you defeat it. You need 77 of each variety. Since each boss fight gives you only one card per drop, expect significant grinding to accumulate all 231 cards.
The Restless Gambler title is the final requirement. It drops from the Hakari boss at a 5 percent rate, making it the rarest item on the list. Alternatively, you can obtain it from the Arcade Gacha at a 3.5 percent chance by spending gems to roll.
How to spawn and defeat the Hakari boss
You cannot fight the Hakari boss without a Gambler's Spirit, a summoning item exclusive to the Arcade Gacha. Roll at the Arcade Gacha using gems for a 7 percent chance to receive it. The Arcade Gacha is located on Rogue Town island—from the main entrance, head straight and turn right until you reach the end of the road, then look to your left for a machine that resembles an arcade cabinet.
Once you have the Gambler's Spirit in your inventory, open your inventory menu and click the item to activate it. This spawns the Hakari, Restless Gambler boss at Rogue Town with 40 million health. Defeating it drops one of the card types or the title, depending on your luck.
Trading for the Hakari combat
Step 1: Gather all five items listed above. This is the time-intensive phase and will require multiple boss runs to accumulate the cards and title.
Step 2: Travel to Rogue Town and locate Hakari's Teacher. He stands near the Craft NPC, Heritage Chest, and Zangetsu's Gacha.
Step 3: Interact with Hakari's Teacher and confirm the trade. He will take all five items from your inventory in exchange for the Hakari combat ability.
Once the trade completes, you gain access to the Hakari fighting style. The Restless Gambler title, if equipped alongside the Hakari combat, provides a 20 percent damage boost to the ability. The Hakari's Outfit accessory, which drops from the boss at a 2.5 percent rate, grants additional stat multipliers—x1 Strength, x1 Defense, x1 Sword, and x3.5 Power—making it ideal for power-focused builds.
