【With two serial codes】9, 10 Application for THE ALFEE "HEART OF RAINBOW" Release Commemoration Talk Event Movie Theater Screening Bonus [First Press Edition Inclusion Bonus 1] Photo card (by format, all 4 types) Product Introduction THE ALFEE's 51st Anniversary Debut Single is here! ■The first single of 2025, which will brilliantly conclude the 50th-anniversary memorial year and step into a new stage, is released! A heartfelt song delivering a message of love and hope, with THE ALFEE's forte, three-part chorus, and symphonic melodic rock―― "HEART OF RAINBOW" is finally complete! ■Releasing in 4 formats with different jackets & bonus tracks.