Sum 41 frontman Deryck Whibley claims his former manager coerced him into a sexual relationship in his new memoir “Walking Disaster.”

In the book, Whibley, 44, claimed that in the band’s early days, he was groomed and sexually and verbally abused by Nori. He alleges that the grooming began when he was 16 and Nori — who’s also the frontman for the Canadian punk band Treble Charger — was 34.