松本潤
"Bittersweet" is the 42nd single released by Japanese boyband Arashi. "Bittersweet" was used as the theme song for the drama "Shitsuren Chocolatier" starring Arashi member Jun Matsumoto. The B-side "Road to Glory" was used as the theme song for Nippon TV's broadcast of the 2014 Winter Olympics. It was the 7th best-selling single of the year in Japan, with 591,847 copies.