One Piece

Synopsis

Jimbei thanks Luffy for what he has done to him. Vowing to meet again at Fishman Island, Jimbei and Luffy go their separate ways. At Rayleigh's request, Hancock's ship lands on a Ruskaina, an abandoned island northwest of Maiden Island. As Hancock and Luffy go their separate ways, Rayleigh tells Luffy about the island. Luffy tries to attack a large elephant with Gear Second, but it fails. Rayleigh teaches Luffy two Haki techniques, using the first technique, Observation Haki - a power feeling a person's presence - to avoid the elephant's attack. Rayleigh then knocks out the elephant with Armament Haki, another technique used as an invisible shield and can render a Logia-type Devil Fruit user unconscious. Rayleigh also reveals that the Armament Haki can be transferred to a weapon. When the elephant tries to attack again, Rayleigh finally defeats it using the Conqueror's Haki, a rare type of Haki that can only be awakened by a user. Luffy promises to Rayleigh that he will stay for the next two years to control his Haki techniques and prepare to reunite with his crew. The next day, Luffy begins his training with Rayleigh.

(Source: Wikipedia)