Ch. 21Golden Lion: How's that? Hard enough?
Golden Lion Shiki demonstrated how Armament Haki hardened his body and sword, then began teaching Ares the ability. Ares studied the technique intensely and appeared to grasp its use, surprising Shiki and Whitebeard.
- Golden Lion Shiki explained that strong Armament Haki could harden a sword into a Black Blade and keep it from breaking.
- Whitebeard and Shiki argued over where to teach Ares before Ares led them to his room in Skull Castle.
- Shiki hardened his arm with Armament Haki and invited Ares to feel its strength.
- Ares realized Armament Haki could provide the hardness he sought and replayed Shiki's demonstration in his mind.
- Whitebeard and Shiki compared how long it had taken them to master Haki before Ares interrupted to ask if he had used it correctly.