In the final story of the series, it looks like Oda is preparing us for a blockbuster reveal, possibly a new class of devil fruit used by the Five Elder Stars.
There are 3 main devil fruit systems: Paramecia, Logia and Zoan
Initially, when Luffy was introduced to devil fruit, the idea of detailed classification was not yet raised. However, as the series expanded further on the devil fruit universe, Oda clearly defined three main types. Logia is known to be the most powerful of its kind, allowing the user to transform and control elements or forces of nature, in addition to gaining the ability to become invisible.
Paramecias are extremely diverse, allowing users to produce substances from their own bodies or transform their bodies in extraordinary ways. Zoan allows you to transform into an animal or a hybrid between an animal and a human.
Devil fruit subclasses and their mysteries
The devil fruit systems are also branched out in more detail. For example, the Zoan system will include the ancient Zoan and the mythical Zoan. Ancient Zoans allow transformation into prehistoric creatures such as dinosaurs, while Mythical Zoans involve mythical entities such as dragons and phoenixes.
Or the Paramecia system has special Paramecia, a category that includes devil fruits that work in a similar way to Logia, such as Charlotte Katakuri's Mochi Mochi no Mi, which allows you to manipulate and transform into mochi.
The Five Elder Stars and the mystery of Yokai's abilities
Recently, the abilities of the Five Elder Stars have come to light, showing transformations into Yokai, demonic creatures that do not fit into typical Zoan types. This raises suspicions that these powers may represent an entirely new subclass, possibly a Zoan variant that has yet to be officially recognized.
These Yokai's abilities are exceptionally powerful, providing a variety of offensive and defensive skills, which only adds to the mystery surrounding the true nature and origin of the Five Elder Stars' powers. Are they immortal? Are they affected by the traditional weaknesses of Devil Fruit eaters, like seawater?
Conclusion and expectations
While still just a theory, the idea that the Five Elder Stars could represent a separate devil fruit subclass is intriguing and adds more depth to One Piece's already complex power system. If confirmed, this could be the turning point in the manga's final story, showing that there is still a lot to discover about the mysterious devil fruits.