Japanese Idol Trainee Hirata Runa Dies at 8 from Influenza-Triggered Myocarditis
Hirata Runa, an eight-year-old trainee for the Japanese idol group DIANNA Project, died on September 25, 2026, from myocarditis caused by influenza. She had performed her final concert just five days prior. Her family and agency requested privacy during the mourning period, noting that a third of her life was spent in the entertainment industry.