What is the theme song of "Neon Genesis Evangelion"?

The theme song of Neon Genesis Evangelion is "A Cruel Angel's Thesis" because it encompasses the overall tone, message, and complexity of the series. This iconic song starts with an energetic and catchy melody, representing the initial impression of a typical upbeat anime opening, but then transitions into more somber and introspective tones. The lyrics delve into the deeper psychological themes of the show, such as the complexities of human relationships, existentialism, and the burden of destiny. Additionally, the juxtaposition between the lively music and contemplative lyrics reflects the contrasting nature of the characters and their struggles within the narrative. The song's symbolism and emotional depth perfectly align with the profound and thought-provoking aspects of Neon Genesis Evangelion, making "A Cruel Angel's Thesis" the ideal theme song for the series.