Joy Boy Theory: The Rainbow Is His Unfinished Promise

With the One Piece Final Saga pushing toward its climax, fans around the world are scrambling to decode Oda’s deepest mysteries — but one clue may have been hiding in plain sight for years. A recent viral segment from Japanese One Piece content creators at Drop the Pizza has reignited discussion around a deceptively simple question: what does the rainbow truly symbolize in One Piece, and could “Orajo Rainbow” — a phrase casually dropped in the video — be the key to understanding Joy Boy’s world-changing promise? If this theory is correct, it reframes everything we thought we knew about the One Piece itself.

The Theory

The rainbow theory is not new in Japanese fan circles, but the Drop the Pizza discussion breathes fresh life into it by connecting the symbolic language Oda uses across arcs. The stakes are enormous: if the rainbow is a consistent narrative symbol tied to Joy Boy’s vow, then nearly every major arc in One Piece has been quietly building toward a single, unified emotional payoff — the world finally seeing the “dawn” that was stolen from it 800 years ago during the Void Century.

Evidence from the Manga

1. Chapter 1114 (and Final Saga broadly): Dr. Vegapunk’s posthumous message reveals that the sea level is rising and the world as we know it faces an extinction-level threat — framed as an event that Joy Boy himself foresaw and failed to prevent. The rainbow, as a symbol appearing after catastrophic floods in global mythology (most famously Noah’s Ark), directly maps onto this narrative: a promise made after a world-ending flood.
2. Chapter 1044: When Monkey D. Luffy awakens his true Devil Fruit power — the Hito Hito no Mi, Model: Nika — the chapter’s imagery explodes with color and joy. Luffy’s awakening is described as the “most ridiculous power in the world,” and the visual presentation mimics the chaotic, multi-colored energy of a rainbow spectrum. This chapter essentially confirms Luffy as Joy Boy’s successor, inheriting not just his power but his symbolic identity.
3. Chapter 303 (Skypiea Arc conclusion): The Knock Up Stream launches the Going Merry into the sky, and when the crew descends back to the Blue Sea, a massive rainbow arc frames their return. Oda uses this moment with unmistakable intentionality — it is one of the most visually celebrated panels in the series and directly precedes the giant gold bell ringing, which itself is tied to the Void Century’s suppressed history.

📌 Key Evidence: In the Drop the Pizza video, the hosts specifically reference “Orajo Rainbow” as “basically the true identity of the One Piece” — a joke that lands because so many Japanese fans genuinely believe Oda’s rainbow imagery is the emotional and symbolic core of the entire story’s resolution. The laughter doesn’t dismiss the idea; it reflects how widely it has circulated in fan discourse.

4. Chapter 966 (Roger’s Era Flashback): Gol D. Roger reaches Laugh Tale and discovers the One Piece, weeping with laughter. His crew’s reaction — joy mixed with the understanding that they were “too early” — mirrors the emotional register of a promise just out of reach. Roger could see the rainbow but could not cross it.
5. Chapter 1085 (Nefertari Lili Revelation): The reveal of Nefertari Lili as a key figure connected to Joy Boy’s era adds another dimension to the rainbow theory. The Nefertari bloodline — embodied now by Nefertari Vivi — carries a piece of Joy Boy’s unfinished promise. Vivi’s signature colors and her nation’s iconography (Alabasta, the desert that desperately needs rain) make the “rainbow after the storm” metaphor almost impossible to ignore.

📌 Key Evidence: The Japanese word for rainbow, 虹 (niji), appears in the content discussion alongside the fish motif — a direct visual parallel to the Fishman Island arc’s liberation theme. Fishman Island (Chapter 628 onward) resolves with Luffy making a declaration that mirrors Joy Boy’s ancient apology to Mermaid Princess Shirahoshi, completing a 800-year-old emotional debt. That arc ends with light breaking through the deep sea — another rainbow-adjacent image.

Our Analysis

What makes the rainbow theory compelling is not that it predicts a specific plot event — it’s that it identifies the *emotional grammar* Oda has been writing in. Oda is a visual storyteller who encodes meaning in recurring motifs, and the rainbow (虹, niji) functions in One Piece the way the “madeleine” functions in Proust: it is the involuntary, beautiful reminder of something once felt and then lost. Every time a rainbow appears in the series, it arrives after hardship — after storms, after floods, after battles — and always in proximity to moments of liberation or reunion.

The Drop the Pizza hosts may have been playing a kanji knowledge game, but their instinct that “Orajo Rainbow” is “basically the One Piece’s true identity” taps into something genuine in the fandom’s collective reading. The One Piece, whatever its physical form, is almost certainly tied to Joy Boy’s apology and promise — and a rainbow is the universal human symbol for exactly that: a covenant between the sky and the earth, a promise that the worst is over. Oda has studied mythology deeply (his Skypiea arc alone is layered with Norse, Polynesian, and Biblical references), and the rainbow-as-covenant is one of the most cross-cultural symbols in human storytelling.

The one significant counter-argument is that Oda may be too literal a storyteller for something this abstract. His recent reveals — the Nika fruit, Imu’s identity, the Mother Flame — have been more concrete than symbolic. It’s possible the rainbow imagery is genuine foreshadowing of an emotional payoff rather than a literal object. But that may be exactly the point: the “One Piece” that makes the whole world laugh and cry may not be a treasure chest at all. It may be the moment the world finally sees its rainbow — the Dawn that Joy Boy died trying to bring.

Theory Credibility Rating

The rainbow-as-covenant theory earns four stars because it is grounded in verifiable visual and narrative patterns across decades of the manga — but loses one star because Oda has yet to explicitly connect the rainbow motif to Joy Boy’s promise in dialogue or narration, leaving the final confirmation still ahead of us.

Source: https://www.youtube.com/watch?v=axRv-mBANTk