Shanks Theory: His Son Will Inherit the Straw Hat

With the Final Saga of One Piece now in full swing and the endgame drawing closer with every chapter, fan theorists — especially in Japan — are dissecting Episode 1 with fresh eyes. One theory is making serious waves right now: the child that Makino was caring for in Chapter 1 is secretly Shanks’s son, and Luffy will pass the Straw Hat to him in the very last chapter. If this is correct, it reframes the entire story’s generational structure and reveals that Shanks was already setting his own legacy in motion the moment he handed Luffy that hat.

The Theory

The stakes here are enormous. One Piece has always been a story about inherited will — the torch passed from Joy Boy, to Roger, to Shanks, to Luffy. If this theory holds, the final scene of the manga mirrors the first: a young child in Foosha Village, a Straw Hat changing hands, and a new adventure beginning. It would also mean Shanks dies before he can reclaim the hat himself — unable to meet the deadline he set Luffy, but watching his own bloodline carry the dream forward.

Evidence from the Manga

1. Chapter 1 (Romance Dawn): When Shanks and his crew visit Foosha Village, Makino is shown as a warm, nurturing presence — and a child is later seen in her care. The theory argues this child, conceived during Shanks’s visits to the village, would have been born shortly after the Red-Hair Pirates departed.
2. Chapter 1 (Shanks’s Promise): Shanks tells young Luffy, “Come back and return this hat when you’ve become a great pirate.” This is the emotional anchor of the entire series. But what if Shanks already knew — or suspected — he might not survive to receive it? Framing the promise as a mission he couldn’t guarantee he’d be alive to receive adds a tragic new layer.

📌 Key Evidence: Shanks’s exact words — “Come back and return this hat to me” — have always been read as a straightforward promise. But in One Piece, characters who give impossible deadlines often die before they’re met. Roger told Rayleigh he wouldn’t die of illness. Whitebeard said he’d make Ace his successor. The hat may never return to Shanks — because Shanks is already planning for what comes after him.

3. Ace, Sabo & the Pink Hair Pattern: Both Portgas D. Ace and Sabo — Luffy’s sworn brothers — notably have hair that differs from their biological parents. The theory points out that a child born from the red-haired Shanks and the dark-haired Makino would likely produce a character with diluted red pigment: pink hair. This is a subtle but recurring visual logic in Oda’s character design.
4. Chapter 1086 onward (Final Saga escalation): With the Gorosei now revealed as monstrous immortal threats and the World Government’s endgame in motion, it is increasingly likely that Shanks — as a Four Emperor who has danced too close to Mary Geoise’s secrets — will not survive to the series’ end. His meeting with the Gorosei in Mariejois was never adequately explained, and its consequences may be fatal.

📌 Key Evidence: Shanks visiting Mariejois to “discuss a certain pirate” — widely believed to involve the Road Poneglyphs or Joy Boy’s will — suggests he has insider knowledge the World Government would ultimately want silenced. Characters who know too much in One Piece rarely reach the finish line.

5. One Piece’s Generational Will Structure: The series explicitly frames its central theme as “inherited will” (意志を受け継ぐ). The chain runs: Joy Boy → Roger → Shanks → Luffy. For this pattern to complete with maximum emotional resonance, Luffy must pass the hat to someone — and that someone should be a child connected to Shanks, creating a loop: Shanks’s will passes through Luffy and returns, bloodline intact, to Shanks’s own son.

Our Analysis

What makes this theory genuinely compelling — beyond its emotional symmetry — is that it solves a structural problem Oda has quietly been building toward for 25 years. Luffy cannot simply “return” the Straw Hat to Shanks at the end and have the story feel complete. That would be a conclusion, not a continuation. One Piece has always resisted finality in favor of perpetual horizon. For the final chapter to feel true to the manga’s soul, there must be a new dreamer receiving the hat — and having that dreamer be the son of Shanks, Luffy’s greatest mentor, is exactly the kind of layered circularity Oda has demonstrated he loves.

The “pink hair” detail deserves more credit than it might first receive. Oda’s color genetics aren’t scientifically rigorous, but they are internally consistent as a storytelling device. Luffy’s brothers — Ace with his black hair and Sabo with his blonde — reflect their respective origins, while Luffy’s own unruly black hair mirrors Garp’s. A child born of Shanks (red) and Makino (dark) trending toward pink hair would fit that design logic, and it would make the child visually distinct while carrying a recognizable echo of his father. Pink hair in the East Blue. Oda doesn’t do accidents.

The one genuine counter-argument here is that Shanks’s death is not yet confirmed, and Oda has subverted death expectations before — most famously with Pell in Alabasta. However, the pattern of “the mentor must step back for the student to truly begin” is baked into One Piece’s DNA. Roger died. Whitebeard died. Ace died. The weight Shanks carries as Luffy’s original inspiration means his survival into the epilogue would diminish Luffy’s completion of the cycle. Shanks dying — and his son unknowingly inheriting his will through Luffy — is not just poetic. It is structurally necessary.

Theory Credibility Rating

The generational will structure, the visual hair-color logic, Shanks’s unexplained Mariejois visit, and the narrative necessity of the Straw Hat passing forward rather than backward all combine to make this one of the more structurally sound Final Saga theories in circulation — the only thing holding it from a perfect five stars is that Makino’s child’s parentage has never been directly confirmed in the manga.

Source: https://www.youtube.com/shorts/Y1Dg9YFVqRM