Top brass at Japanese network giant Fuji Television and its parent company have stepped down following explosive allegations involving former SMAP frontman Masahiro Nakai and claims of a corporate cover-up,

The chairman and president of Fuji TV, one of Japan's biggest networks, have resigned in the wake of a sexual misconduct allegation against a famous TV host. Dozens of companies have pulled their advertisements from the network, which was criticised for trying to cover up the scandal.