Fullmetal Alchemist: Brotherhood

Consistently ranked #1 on MyAnimeList (the IMDb of anime) with a 9.1 rating from over 2 million reviews. Two brothers use forbidden alchemy to try to resurrect their dead mother — it goes wrong, one loses his body entirely, and their quest to restore themselves leads to a conspiracy involving the entire military government. The show balances humor, action, horror, and genuine emotional depth across 64 episodes without a single bad arc. It's the anime that people who say "anime isn't for me" watch and immediately request more.