A team of experts investigating alleged sexual abuse by late musical mogul Johnny Kitagawa delivered a scathing report Tuesday, urging Johnny & Associates President Julie Keiko Fujishima to step down after the family-run business left the issue unaddressed for decades.

The third-party team of experts, appointed by the talent agency in late May, interviewed 41 people for the report and concluded that Johnny Kitagawa started sexually abusing boys in the 1950s, and then at his agency from the 1970s to the 2010s.

The team is comprised of three experts: former prosecutor-general Makoto Hayashi; psychiatrist Nozomu Asukai; and child trauma specialist Azusa Saito, along with six lawyers from law firm Anderson Mori & Tomotsune to help with the investigation.