This single features the A-side "Kokoro no Senshi," a powerful ballad released as the second ending theme for the anime series "Fullmetal Alchemist."
- "Kokoro no Senshi" reached number 18 on the Oricon Weekly Singles Chart.
- The single was Angela Aki's first release on Sony Music Labels Inc.
- The song is a Japanese-language original, despite Aki's bilingual background.
Angela Aki is a Japanese singer-songwriter known for her piano-driven pop ballads and bilingual songs. She was a prominent artist in the mid-2000s J-pop scene.
Tracklist
