Prosecutors demanded a three-year prison term for disgraced pop singer Aska on Thursday as his trial over illegal drug use kicked off at the Tokyo District Court.

The singer, half of the long-running duo Chage and Aska, pleaded guilty to all charges, including breaking the Stimulant Control Law and the Narcotics Control Law.

¡°I¡¯m terribly sorry for betraying my fans and anyone concerned,¡± said the 56-year-old, whose real name is Shigeaki Miyazaki.