Imu’s 19 Weapons Theory: Mythology Behind Each Blade

With the Final Saga entering its most explosive phase, Imu’s true power is finally being revealed — and it’s far more terrifying than anyone anticipated. In recent chapters, Imu has demonstrated the ability to resurrect the legendary weapons of the Nineteen Kings using a dark force called Omen (魔気, Maki), pulling blades from the Empty Throne itself to unleash devastation on Luffy and his allies. If this theory is correct — that each of Imu’s nineteen weapons is drawn from a specific mythological tradition — it changes everything we thought we knew about the World Government’s origins and the true nature of the Void Century.

The Theory

Imu sits upon the Empty Throne — or rather, rules from behind it — surrounded by the blades of the twenty founding kings, nineteen of whom gave their weapons to the throne as a symbol of surrender of individual authority. By resurrecting these weapons through Omen, Imu is essentially reclaiming the power of gods and conquerors from across human mythology. The stakes are enormous: if Oda is deliberately encoding mythological meaning into each weapon, then the names and legends behind them may serve as foreshadowing for how each will be used — and who will ultimately be able to stop them.

Evidence from the Manga

1. Chapter 1181 — Nemesis (天罰剣, “Sword of Divine Punishment”): The first weapon revealed is named after Nemesis, the Greek goddess who personifies divine retribution against human arrogance toward the gods. The kanji reading — “Sword of Heaven’s Punishment” — is a perfect translation of her mythological function. That Imu, a figure who views herself as a god, wields a blade of divine punishment is deeply fitting.
2. Chapter 1183 — Gram (憤怒剣, “Sword of Wrath”): Gram is one of the most famous swords in Norse mythology. Odin plunged it into a tree at a feast, declaring it would belong to whoever could draw it. Only the hero Sigmund succeeded. The sword was later inherited by his son Sigurd, who used it to slay a dragon. Given that Luffy’s antagonist is a figure associated with the dragon Loki in fan discourse, Gram’s anti-dragon mythology is almost certainly intentional on Oda’s part.
3. Chapter 1188 — Stigma (怨魔剣, “Sword of Cursed Grudge”) and Bohu (虚無剣, “Sword of Void”): Two mythologically rich weapons appear together here. Stigma derives from ancient Greek for a brand or wound marked on slaves and criminals — in Christian tradition, it refers to the wounds of Christ appearing on saints’ bodies. In the manga, Stigma first marks a target with Omen flame before homing in. Bohu, meanwhile, comes from the Hebrew “Tohu va-Vohu” (תֹהוּ וָבֹהוּ) in Genesis 1:2, describing the formless, void state of the world before God’s creation. The pairing of a marking sword and a void sword in the same chapter — one that creates, one that erases — mirrors the Biblical act of creation from nothing.

📌 Key Evidence: Chapter 1189 introduces Fragarach (海神剣, “Sea God Sword”), the magical blade of Celtic/Irish mythology originally owned by Manannan mac Lir, god of the sea, before being gifted to the sun god Lugh. Its power: whoever has it pointed at them cannot lie and must speak the truth. Critically, when Imu wields Fragarach against Luffy, he asks: “How many strikes will it take before you breathe your last?” — a question that compels a true answer. This is not coincidental name-dropping; Oda is using the mythological function of the weapon as a plot device in real time.

4. Chapter 1189 — Longinus (ロンギヌス): Longinus is the name of the Roman soldier in the Gospel of John who pierced Christ’s side with a spear during the Crucifixion. According to legend, Longinus was partially blind, and when Christ’s blood touched his eyes, his sight was restored — leading to his conversion and eventual sainthood. The Spear of Longinus has since become one of the most iconic “holy relics” in world mythology and fiction. Its appearance in Imu’s arsenal connects the Empty Throne directly to themes of sacred sacrifice and resurrection — themes central to the Joy Boy myth.
5. Chapter 1189 — Keitennono (刑天の斧, “Axe of Xingtian”): Xingtian is a giant from ancient Chinese mythology (recorded in the Shanhaijing / Classic of Mountains and Seas) who fought the Yellow Emperor for divine supremacy. Defeated and beheaded, he refused to stop fighting — transforming his nipples into eyes and his navel into a mouth, brandishing a shield and axe in eternal defiance. The irony of Imu wielding “the axe of the warrior who refused to accept beheading” while threatening to behead enemies is a darkly poetic choice by Oda.
6. Chapter 1190 — Honebami Tōshirō (骨喰藤四郎): Unlike the mythological Western weapons, Honebami is a real historical Japanese sword — a blade that passed through the hands of Minamoto no Yoritomo, the Ashikaga shogunate, Toyotomi Hideyoshi, and ultimately Tokugawa Ieyasu, making it a literal symbol of supreme rulership across Japanese history. Its name means “bone-devouring,” derived from legends that even a casual swing would shatter an opponent’s skeleton. Crucially, the real sword bears an engraving of a Kurikara dragon — and the Omen energy wrapping around Imu’s blade in serpentine form appears to directly reference this dragon imagery.

📌 Key Evidence: The weapons span Greek, Norse, Celtic, Hebrew/Biblical, Chinese, and Japanese mythology — six distinct cultural traditions represented across just nine confirmed weapons so far. This is not random naming. Oda appears to be constructing a deliberate global mythological pantheon to represent the “world-ruling” nature of the original Twenty Kings, with Imu’s collection functioning as a literal encyclopedia of humanity’s greatest legendary armaments.

Our Analysis

What makes Oda’s weapon-naming system so remarkable is that he isn’t simply borrowing cool-sounding names from mythology — he’s using the function and story of each mythological weapon as a blueprint for how that weapon behaves in combat. Fragarach doesn’t just have a Celtic name; it literally compels truth-telling in the scene where Imu wields it. Gram isn’t just “a Norse sword”; it’s the dragon-slayer, used in a narrative context where dragon-related powers are central. Stigma doesn’t just mean “mark” — it marks targets. This level of mythological literacy embedded into action choreography is extraordinary, and it tells us that the remaining ten weapons are not arbitrary. If we know the mythology, we may be able to predict both their abilities and the context in which they’ll be deployed.

There’s also a deeper thematic argument being made here. The Twenty Kings who founded the World Government drew from every corner of the ancient world — Greek, Norse, Celtic, Hebrew, Chinese, Japanese. The weapons they left behind represent humanity’s collective mythological imagination about divine power. By having Imu resurrect and wield all of them simultaneously, Oda is positioning Imu not merely as a political tyrant but as something approaching a false god — a being who has stolen and hoarded every culture’s concept of sacred, unstoppable power. This makes the Joy Boy / Nika framework all the more pointed: the answer to a stolen pantheon of divine weapons is not another weapon, but laughter, freedom, and the unpredictability of rubber.

The inclusion of two real Japanese historical swords — Muramasa and Honebami Tōshirō — alongside mythological Western weapons is also noteworthy. Both blades passed through the hands of Japan’s most powerful rulers. Their presence suggests that among the Nineteen Kings, at least some represented a culture analogous to feudal Japan — which aligns beautifully with the Kozuki clan’s role in the Void Century and the Wano connection to the Ancient Weapons. The dragon engraved on the real Honebami’s blade, manifesting as Omen energy in the manga, is perhaps Oda’s most elegant fusion of real history and fictional world-building yet.

Theory Credibility Rating

This is not speculation — it is direct textual and visual analysis confirmed panel by panel across Chapters 1181–1190, and the mythological sources are verifiable historical records, making this one of the most evidence-supported analytical frameworks currently available for the Final Saga.

Source: https://yasaoblog.fun/onepiece/consideration/imu-19-kings-weapons/