Which anime based on manga has the most faithful adaptation?

I think 'One Piece' has an anime that is mostly true to the manga. It follows the adventures and character growth precisely. There might be some filler episodes, but the main storyline remains consistent with the manga.

I'd say Naruto. The anime sticks closely to the manga, keeping the core story and character developments intact.

In my opinion, Naruto has a pretty close adaptation. The characters, storylines, and major events are mostly consistent between the manga and the anime. Some minor details might be different, but the core remains the same.

I think 'Fullmetal Alchemist: Brotherhood' has a very faithful manga adaptation. It covers almost everything from the manga without major changes.

I think One Piece has a very faithful adaptation. It captures the essence and major plot points of the manga quite accurately.

In my opinion, 'Sword Art Online' has a pretty close manga adaptation. It manages to capture the key elements and action scenes well. However, there might be a few minor tweaks to make it more suitable for animation.

I think 'Fullmetal Alchemist: Brotherhood' has an extremely faithful adaptation. It sticks closely to the manga's story beats, character arcs, and themes. The few changes made are mostly to enhance the visual and narrative presentation and don't stray far from the original manga.

I think 'Fullmetal Alchemist' has a very loyal manga adaptation. The anime captures the key plot points and character developments accurately.

For me, 'Death Note' has a very loyal adaptation. The anime keeps the core elements and plotlines from the manga intact, with only minor tweaks for the medium of animation. The characters' developments and the overall tension are well-preserved.

I think 'Fullmetal Alchemist' has a very loyal anime adaptation. The plot, characters, and themes are closely followed.