The Yami Yami no Mi has always been one of the most enigmatic and terrifying Devil Fruits in One Piece, and is closely linked to Blackbeard's ascension as one of the greatest threats in the story. While its darkness-related abilities are fairly well-established, new discoveries suggest that the influence may be much deeper than anyone grasped.
From a century-old song named Yama Yama Man, to especially odd connections that include clowns, twins, and even mythical references, the true origin of the fruit could radically change its symbolism in Oda's world.
Disclaimer: The article reflects the writer's opinion and includes spoilers from the manga.
What could be the origin of Blackbeard's Yami Yami no Mi in One Piece, explained

The Yami Yami no Mi has been a subject of much mystery for quite a while now. But after delving deep into its possible sources of inspiration, the connections reveal a mystery that reflects seemingly opposite links, which might change fans' conception of its origins in One Piece.
The word "Yami", which translates to darkness, could possibly derive from the 1908 song Yama Yama Man, which had disturbing qualities, performed by Bessie McCoy, who was dressed as a clown.

It is common knowledge that Eiichiro Oda bases many of his character designs and stories on popular songs and movies, and having clowns represented in this performance ties together interesting connections to Buggy that ultimately point to an unusual relationship he and Blackbeard could resemble.
The record label was run by three twins who could reference the potential of Blackbeard's rumored connection to siblings.
Even more surprising is the later recording of Yama Yama Man from Ada Jones, sharing a name with Davy Jones, the infamous sea legend with possible connections to One Piece lore. Jones also has a striking resemblance to Ida that could complicate any genealogical connection as intended by Oda.

Just the instances representing clowns, circus representation, and twins appear to be an odd setup, and any connections to Blackbeard, Buggy, and future origins may be part of the larger puzzle.
Mythologically, "Yama" refers back to the Hindu deity of death, Yama, who also has a twin sister named Yami. This idea of divine twins with solar god connections to Surya echoes the concept of the Yami Yami no Mi being half of a whole, perhaps the opposite of a Sun God fruit.
If these assumptions are valid, it would be assumed that Imu or another hidden person has the other half of this dichotomy, and one day, these abilities will clash in a battle of light and darkness.
Final thoughts
In One Piece, Oda took all of the inspirations that went into the Yami Yami no Mi; from a circus performer to a forgotten song to gods of death, the sun, and everything else in between, and created a much more elaborate picture than just a Devil Fruit.
He seems to soften Blackbeard’s powers when he credits them with pieces of mythology. It’s like he's suggesting that Blackbeard’s powers aren’t just darkness; they are dark potentiality, myth, and song that cross time and space inherent to the very fabric of light and darkness within One Piece.
Related links:
- One Piece timeline suggests a surprising origin for Mihawk
- Fans are shocked by the Straw Hat Flag's usage in Indonesia
- Imu's strength in One Piece might come from a certain grimoire