Berserk

Berserk is a dark fantasy anime following Guts, a lone mercenary, as he navigates a world filled with supernatural threats and corrupt knights. Joining the Band of the Hawk led by Griffith, Guts faces betrayal and a catastrophic event known as the Eclipse, altering his fate. The series explores themes of revenge, betrayal, and the struggle between humanity and dark forces, known for its mature content and psychological depth. The anime primarily covers the Golden Age Arc but is often recommended alongside reading the manga for the complete story.