The choice changes the story you will experience, not just its animation. This comparison covers the shared premise, the way Brotherhood introduces it, the earlier production’s creative independence and the films attached to each version. It discusses opening material but keeps the endings’ outcomes unspoiled.
Two adaptations begin with the same loss
Edward and Alphonse Elric try to bring their mother back through human transmutation. Edward loses his left leg; Alphonse loses his entire body. Edward then sacrifices his right arm to bind his brother’s soul to a suit of armour. The studio’s synopsis for the 2003 series makes that sequence explicit. Their search for the Philosopher’s Stone grows from a concrete hope of recovering what they lost.
Both anime use that foundation, but Brotherhood is a new adaptation beginning from its own episode 1. It is not season 2 of the 2003 show. You will meet familiar names and situations before the versions develop different storylines. Treating the older series as a long prologue to Brotherhood would mean expecting one production to resolve events established by another.
The timing helps explain the two projects. BONES dates the first series to 2003–2004. The manga was still unfinished then; Square Enix identifies volume 27, released in November 2010, as its conclusion. Brotherhood arrived later and follows that main narrative to its ending. The 2003 production developed an anime-specific continuation instead. That makes it a different adaptation to evaluate, rather than simply an incomplete copy.
Brotherhood introduces the story without the earlier series
Brotherhood’s opening can feel busy because it begins with the brothers already operating in the military world. Its official episode 1 description follows their pursuit of Isaac the Freezer, a former State Alchemist threatening Führer Bradley. You are being introduced to the setting through an active crisis; you have not missed a required previous season.
Episode 2, “The First Day,” then returns to the brothers’ childhood, the forbidden transmutation and the circumstances behind their military involvement. Episode 3, “City of Heresy,” brings them into conflict with Father Cornello and his supposed miracles. Together, those opening episodes establish the loss, their present position and the search that carries them forward.
That is why I recommend starting at episode 1 even if you have seen some of the older anime. Brotherhood decides when to reveal information and how to introduce relationships for itself. A familiar event is still doing work inside this particular telling. Skipping to a supposed point where the shows “split” can remove that setup while leaving you with expectations built by the other version.
For someone choosing only one series, the practical advantage is completion within a single television run. Aniplex’s official box-set announcement lists all 64 episodes, and the US episode guide reaches “Journey’s End”. My recommendation follows that contained route and its connection to the manga; it is not a claim that a faithful adaptation must always be better art.
The 2003 anime deserves to be watched as its own story
Choose the 2003 series if you are interested in how another creative team develops Edward and Alphonse’s predicament. Its decisions about the later story and conclusion are the reason to watch it. Finishing only its early material before moving to Brotherhood means leaving that version’s own response to the brothers’ search unseen.
It is also misleading to reduce its production to a story about a studio ignoring the manga’s creator. In a direct post on 8 February 2026, story editor Shō Aikawa recalled explicit restrictions from Hiromu Arakawa, including no flight through alchemy and no motorcycle for the protagonist. He said editors and Square Enix representatives attended every script meeting, sometimes consulting Arakawa during the meeting.
That account establishes a process of consultation and specific limits. It does not prove that Arakawa approved every creative decision, nor does it make the anime’s original story part of the manga’s continuity. It does give viewers a better basis for judging the 2003 production than an unsupported claim that its differences were an unauthorised accident.
Watching 2003 first is a reasonable choice if you already intend to see both adaptations. Finish its story on its own terms, then start Brotherhood from episode 1. Watching Brotherhood first is equally workable if your priority is the manga’s main narrative. Neither order can preserve every surprise in the other version, because they share characters and early material.
The two films do different jobs
Conqueror of Shamballa belongs after the 2003 television series. The official records distinguish the 51-episode series from the film, and BONES’s film synopsis starts from the brothers’ situation after that version’s television ending. Read that synopsis only after watching if you want to keep the final episodes unspoiled.
For that route, watch all 51 episodes and then Conqueror of Shamballa. The film continues the earlier adaptation’s unresolved situation. Brotherhood does not take over from it, and Shamballa is not a follow-up to Brotherhood’s episode 64.
The Sacred Star of Milos is an optional Brotherhood-era side adventure. Its official introduction begins with a prison escape, takes the brothers toward the border with Creta and introduces Julia and the history of Milos. That is a separate adventure to add if you want more of the brothers, rather than a missing final episode of the television story.
On a first watch, finish Brotherhood before the film instead of interrupting the series to locate an exact chronological slot. This is a viewing recommendation, not a claim that Milos occurs after the TV ending. The four bonus OVAs listed with the official 64-episode set can also wait until you have finished the main story.
The productions differ beyond their endings
Both series were made by BONES, but they have different creative leads. The 2003 credits list director Seiji Mizushima, story editor Shō Aikawa, character designer Yoshiyuki Itō and composer Michiru Ōshima. Brotherhood’s credits list director Yasuhiro Irie, series composer Hiroshi Ōnogi, character designer Hiroki Kanno and composer Akira Senju. Brotherhood is a new production, not a visual remaster of the first series.
For Japanese-audio viewers, Romi Park and Rie Kugimiya voice Edward and Alphonse in both productions, while the supporting cast changes in places. The familiar central voices can make the restart feel more continuous than its story actually is. The credits do not decide which version you will prefer, but they show why comparing the productions involves direction, design and music as well as fidelity to the manga.
The manga is another complete starting point
If your priority is Arakawa’s own telling, read the original manga from the beginning. VIZ lists the standard English edition through volume 27. That is a way to encounter the source directly, rather than choosing between the two anime productions.
Brotherhood reaches that main story’s conclusion, so the manga is a rereading and comparison choice after its finale, rather than a new season waiting in print. After the 2003 anime, beginning the manga from volume 1 gives you its own setup and progression.
