KAT-TUN have digitally released their new song "CRYSTAL MOMENT" on February 4.

"CRYSTAL MOMENT" is the theme song for the Beijing 2022 Winter Sports. Sakurai Sho (Arashi), who is the special reporter for NTV's broadcast of the Beijing 2022 Winter Olympics, provided the song's title and lyrics for the rap part. Besides the rap part, the lyrics were written by Funk Uchino, while it was composed by Erik Lidbom and 7th Avenue and arranged by 7th Avenue. 

February 4 is officially the opening day of the Beijing 2022 Winter Olympics, making it fitting for the song to be released on this day.