Why is ahpra important

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Last updated: April 8, 2026

Quick Answer: Yes, you can watch Fullmetal Alchemist: Brotherhood (FMAB) without watching the original Fullmetal Alchemist (FMA). While both anime are based on the same manga, FMAB is a more faithful adaptation that follows the manga's storyline to its conclusion, whereas FMA diverges significantly after its initial arcs.

Key Facts

Fullmetal Alchemist: Brotherhood (FMAB) is a direct adaptation of the manga and covers the entire story.
The original Fullmetal Alchemist (FMA) anime deviates from the manga's plot after the first 30-40% of the story.
Both anime share the same core characters and initial plot points, but their later storylines diverge.
FMAB is often considered the 'definitive' adaptation by fans due to its adherence to the manga.
Watching FMAB first will not spoil the plot of FMA, and vice versa, though the experience will differ.

Overview

The question of whether one can enjoy Fullmetal Alchemist: Brotherhood (FMAB) without prior viewing of the original Fullmetal Alchemist (FMA) anime is a common one among anime enthusiasts. Both series are born from the same source material, Hiromu Arakawa's critically acclaimed manga. However, their production histories and narrative trajectories lead to distinct viewing experiences and raise questions about sequential consumption.

Understanding their relationship is key. FMA, released first, began adapting the manga but eventually outpaced its publication. Faced with this, the anime's creators decided to forge an original storyline for its latter half. FMAB, on the other hand, was produced later with the explicit intention of adapting the manga's complete narrative from start to finish, making it a more direct and faithful translation of Arakawa's vision.

How It Works

Source Material Fidelity: The primary differentiator lies in their adherence to the manga. FMA follows the manga for roughly the first 30-40% of its story, covering the initial arcs and character introductions. However, it then deviates significantly, introducing new plot points, characters, and a completely different conclusion. FMAB, conversely, meticulously adapts the entire manga, ensuring that its plot, themes, and ending align precisely with the source material. This makes FMAB the "complete" story as envisioned by the author.
Narrative Divergence: The divergence in FMA's story leads to a different thematic focus and resolution compared to both the manga and FMAB. While FMA is still a highly regarded series with its own merits, its original ending and plot developments are distinct from what manga readers experienced. FMAB's narrative journey is thus a more cohesive and unified experience, directly mirroring the manga's progression and finality.
Production Timing: The staggered release of the anime adaptations is crucial. FMA was produced and aired between 2003 and 2004. FMAB, released later from 2009 to 2010, had the benefit of the manga being completed, allowing for a faithful, all-encompassing adaptation. This allows FMAB to build upon the established world and characters from the manga without the narrative constraints that FMA faced.
Fan Reception: While both anime have strong fan bases, FMAB is frequently lauded for its faithful adaptation and often considered the "definitive" Fullmetal Alchemist experience by many fans and critics precisely because it sticks to the manga's story from beginning to end. This doesn't diminish FMA, but rather highlights the different paths they took.

Key Comparisons

Feature	Fullmetal Alchemist (FMA)	Fullmetal Alchemist: Brotherhood (FMAB)
Manga Adaptation	Partial (First 30-40%)	Complete (100%)
Storyline Endings	Original/Anime-exclusive	Faithful to Manga
Character Arcs	Some deviations from manga	Follows manga's character progression
Tone and Themes	Can be slightly darker and more melodramatic in parts	Generally more consistent and aligned with manga's overarching themes

Why It Matters

Understanding the Author's Intent: For those who wish to experience Fullmetal Alchemist precisely as the creator, Hiromu Arakawa, intended, FMAB is the way to go. It presents the complete narrative arc, the full thematic development, and the intended resolution without any authorial detours. This allows for a deeper appreciation of the manga's intricate plot and philosophical underpinnings.
Avoiding Confusion: While watching FMA first won't necessarily ruin FMAB, it can lead to confusion when the storylines diverge. You might find yourself wondering why characters make certain decisions or why plot points that occurred in FMA are absent or different in FMAB. Conversely, watching FMAB first provides a clear, unadulterated path through the manga's story.
Complete World-Building: Both series build a rich and detailed world with its own unique alchemy system and political landscape. FMAB, by covering the entire manga, offers the most comprehensive exploration of this world and its intricacies. All the lore, character backstories, and societal structures are presented in their entirety, allowing viewers to immerse themselves fully.

In conclusion, while both "Fullmetal Alchemist" and "Fullmetal Alchemist: Brotherhood" are excellent anime series based on the same beloved manga, they offer distinct narrative experiences. If your goal is to witness the complete, unadulterated story as envisioned by Hiromu Arakawa, then starting with FMAB is perfectly acceptable, and often recommended, as it is a direct and faithful adaptation of the entire manga. You will not be lost, and the experience will be a cohesive and rewarding one.