One Piece is currently in its final saga, and as the story progresses to Egghead, Oda has been continuously revealing stunning character developments every week. With powerful new characters consistently appearing, it is no surprise that Oda has also unveiled entirely new forms of strength for fans to enjoy.
At present, the world of One Piece has two main sources of power: Haki and Devil Fruits. Devil Fruits are the primary source of strength in One Piece, while Haki is also widely utilized in the New World. However, there are other forms of strength in One Piece, some of which will play significant roles in the future, and some have already been highlighted in the Elbaf arc of the story.
How Haki and Devil Fruits Shape the Power System of One Piece
Fans are well aware of Haki and Devil Fruits in One Piece. Devil Fruits are mysterious fruits that grant significant powers to those who consume them, often at the cost of their ability to swim.

On the other hand, Haki is known to be a spiritual power divided into two main types. Observation Haki can be used as a heightened sense, while Armament Haki serves as a means to enhance both offensive and defensive capabilities, allowing users to bypass the protection granted by Devil Fruits.
A rare third type of Haki only appears among a select few individuals. This is Conqueror’s Haki, the strongest Haki that only those with the ambition of a king can wield. It can be used to intimidate and overpower others, and it can also be harnessed for both offensive and defensive purposes.
Why Oda Introduces New Forms of Power Beyond Haki and Devil Fruits
While Haki and Devil Fruits are the primary sources of strength, Oda has acknowledged that the power of love also exists in One Piece. According to Oda, the strength of love can surpass even Devil Fruits, and the first character to demonstrate this ability is Garp.
Q: In Volume 45, when Garp hits Luffy, why does it seem effective? Is it Haki? Or is it “Love”?
A: In this case, it is “Love”.

Fans also recognize one of the members of the Straw Hat crew, Sanji, as someone who embodies this principle. In fact, he even managed to disrupt Kizaru’s laser beam at Egghead using the strength of love.

In Elbaf, Gaban appears, demonstrating the strength of love, and he also utilizes this power. Gaban is also known to have the ability to counteract the forces of nature, which further connects to the strength of love.
Alongside the strength of love, another remarkable source of power that fans have observed in One Piece is the strength of science. Egghead serves as a clear testament to this, while Wano plays a crucial role in setting the stage for the emergence of the Science Warrior with Sanji. There are numerous other forms of strength within the world of One Piece, but it is undeniable that the power of love is the most compelling force in the various elements that Oda has yet to explain fully.