• The article discusses a major mystery in the popular anime/manga series "One Piece" that was supposedly revealed years ago, but went unnoticed by most fans. It centers around the identity of the mysterious "D." initial that appears in the names of several key characters in the story.

• According to the article, a fan named Artur recently discovered that the answer to this mystery was actually hinted at in a single panel from a 2013 chapter of the manga. The panel shows a character named Nico Robin explaining the meaning behind the "D." initial, revealing that it represents the "will of the D."

• The article suggests that this revelation, which had been hiding in plain sight for nearly a decade, is a testament to the level of detail and foreshadowing that the series' creator, Eiichiro Oda, has woven into the story. It highlights Oda's skill in planting subtle clues that pay off much later, and how even the most dedicated fans can sometimes miss important details.