True Yoru

To Get True Yoru:

Obtain the cross dagger from the Strongest Swordsman raid at Destroyed Marine HQ (Third Sea).

Requirements for True Yoru:

Sword- 7K

Haki- 7K

Once cross dagger and requirements are met, talk to Strongest Sword Trainer located at Destroyed Marine HQ (Third Sea) to get True Yoru.

To Get True Yoru Mode:

First, get a True Yoru blueprint from the monkey NPC at Wilderness (First Sea) by killing monkeys in the Strongest Swordsman Raid.

Next, find glowing orbs found in the locations below:

First Sea: Buggy Island

Second Sea: Pirate Paradise

Third Sea: Leopard Island

You also need these requirements:

Haki- 9.2k

50,000 Gems

Talk to the Strongest Sword Trainer and he will give you the True Yoru Mode.