It's been revealed that Katori Shingo is singing the theme song "Anonymous (feat.WONK)" for his drama 'Anonymous: Keishicho ”Yubisatsujin” Taisakushitsu,' which started on January 25. 

When the song played during the ending of the drama's first episode, only the title "Anonymous" had been revealed. While some viewers had wondered if it was Katori's singing, it was hyped up when mysterious social media accounts appeared under the name 'Anonymous,' and the lyric video for the song was uploaded. Katori finally decided to reveal himself on February 1 when the drama's second episode was scheduled to air. 

This is Katori's first new song since he released his album "20200101" on New Year's Day last year. It's a collaborative work with the band WONK, who was also involved with the album. They took a Western approach using mostly English lyrics that deliver the message "we can see the light in a world of darkness."