Again

The opening is pure kinetic energy: distorted guitar and drums arrive simultaneously, with no ceremony, and Yui's voice cuts through immediately with a rawness that sounds almost surprised by its own force. This is rock music made by a woman who learned guitar largely by herself and approached songwriting as direct emotional transmission rather than craft exercise, and that origin story is audible in every bar. The production has a roughness at the edges that the arrangement never quite smooths away, and this is exactly right — polish would betray what the song is doing. The subject is the particular grief of watching someone repeat the same self-destruction, helpless to intervene, the damage of loving someone who cannot be reached. Yui's vocal delivery is the opposite of controlled; she reaches for notes with something closer to desperation than technique, and the moments where her voice wavers or pushes past its comfortable range feel true rather than flawed. This became one of the most memorable opening themes in anime history by matching the emotional register of its source material exactly: FMA: Brotherhood is a story about loss and the human cost of ambition, and this song knows that in its bones. For moments when emotion needs to be loud before it can be processed.