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8-Year-Old Idol Star Dies Suddenly from Myocarditis
3 Oct
Summary
- An 8-year-old trainee of DIANNA Project died.
- Myocarditis caused by influenza was the cause of death.
- Her last performance was on September 20th.

A promising young talent in the Japanese girls' idol group DIANNA Project, Hirata Runa, has tragically passed away at the age of 8. Her death was confirmed on September 25th, following a brief illness.
The cause of her death was identified as myocarditis, an inflammation of the heart muscle, which was reportedly a complication of influenza. Runa had performed just days earlier, on September 20th, sharing her appreciation for the experience with fans.
DIANNA Project issued a statement expressing heartfelt thanks to Runa's supporters and all those involved in her career. The group has requested privacy for her grieving family during this difficult time. The announcement marked a somber end to a brief but bright career.