B'z new song "Liv" will be used as the theme song for Yokohama Ryusei's starring film 'Usogui.' 

Due out in theaters on February 11, 'Usogui' is a film adaptation of Sako Toshio's manga of the same title. Yokohama plays Madarame Baku, a genius gambler who goes head-to-head with top cheaters at Kakerou, an illegal club that controls Japan's political and business worlds. It's directed by Nakata Hideo. Besides Yokohama, it will star Sano Hayato (M!LK), Shiraishi Mai, Hongo Kanata, Morisaki Win, Sakurai Kaito, Kimura Ryo, Tsurumi Shingo, Murakami Hiroaki, and Miura Shohei. 

"Liv" is described as a thrilling number that was written just for the upcoming film. You can listen to a clip of the song in the movie's trailer below.