SixTONES's new song "Boku ga Boku Janai Mitai da" will be used as the theme song for member Matsumura Hokuto and actress Mori Nana's starring film 'Liar x Liar' to open in theaters on February 19, 2021. 

An adaptation of Kindaichi Renjuro's manga, 'Liar x Liar' will portray the relationship between Minato (Mori), a plain university student who is a clean freak, and Toru (Matsumura), a cool and attractive young man who becomes Minato's step-brother after their parent's remarriage. 

"Boku ga Boku Janai Mitai da" will be released as SixTONES's fourth single, and it's the group's first time being in charge of a movie's theme song. You can listen to a clip of the new song in the trailer below.