"Requiem Blue feat. Watanabe Kazuhiro" is a song released by CURRICULUMACHINE on the GloryHeaven label on January 12th, 2011.
The song was used as the ending theme for the anime "Togainu no Chi"
The song appears as track #7 (DISC 2) on the soundtrack album "Togainu no Chi Original Soundtrack" and as track #6 on the soundtrack album "Togainu no Chi Ending Theme Complete Collection".