The journey through 'Fullmetal Alchemist' and 'Fullmetal Alchemist: Brotherhood' is like savoring two different yet equally captivating flavors of the same dish. Starting with the original, 'Fullmetal Alchemist' aired back in 2003 and took a more individualistic approach in storytelling. While it initially follows the same setup with the Elric brothers, Edward and Alphonse, it veers into an original narrative that diverges significantly from Hiromu Arakawa's manga. The pacing feels a bit slower too, which allows for some deeply emotional moments to resonate with viewers, such as their struggles with loss and the moral implications of alchemy. It has a unique blend of dark themes delivered with a nuanced emotional touch. In this series, you get those poignant, heart-wrenching moments that often linger long after the episode ends.
On the flip side, 'Brotherhood' gave fans the full-fledged story that was directly adapted from the manga, starting in 2009 after the manga had concluded. It respects the original source material much more, which means you get deep lore, expansive characters, and well-explained alchemical theories. This version is also faster-paced and introduces various arcs and characters that were missing in the original series, such as the pivotal figure of Father and those gripping scenes involving the homunculi. The tone is a bit more adventurous and lighthearted, though it still addresses heavy themes of sacrifice, ethics in science, and the bonds of family.
Ultimately, both series provide distinct yet complementary experiences. Some fans cherish the rich character building and emotional weight present in the original, while others may prefer 'Brotherhood' for its adherence to the source material and its more action-focused storytelling. Personally, both are outstanding in their own right, but I lean slightly towards 'Brotherhood' for its comprehensive narrative and seamless pacing that makes re-watching a treat!