Hirata Runa, 8-Year-Old Japanese Pop Star, Dies Days After Final Performance
The DIANNA Project trainee died on September 25 after developing myocarditis associated with an influenza infection, just five days after appearing on stage in Nagoya.
Hirata Runa, the eight-year-old Japanese idol trainee known to fans as Luna-chan, has died after developing myocarditis associated with an influenza infection. She died on September 25, just five days after performing at a live event in Nagoya, Japan.
Runa was a trainee with the Nagoya-based DIANNA Project, a Japanese idol organization that develops young performers. Her death was announced by the project on September 28, while her family later shared further details through her social media account.
According to her family, Runa died at around 4 a.m. local time on September 25. The DIANNA Project said she had died from myocarditis resulting from influenza and asked the public to respect the privacy of her bereaved family.
Runa’s final performance came just five days before her death
One of the most poignant details surrounding Runa’s death is how recently she had appeared on stage.
She performed at the DIANNA Project’s Regular Live Vol.70 event on September 20. Following the performance, Runa posted a cheerful message thanking supporters and describing the day as fun.
Her final public message has since taken on a different significance for fans who followed her short career.
Runa had been pursuing her dream as an idol from a very young age. Her official profile listed traveling and video games among her interests, and reports said she was in her third year of primary school.
The DIANNA Project described her as one of its Nagoya trainees and expressed gratitude to the fans and others who had supported her.
What was confirmed about her cause of death?
The agency identified myocarditis associated with influenza as the cause of Runa’s death.
Myocarditis is inflammation of the heart muscle. Viral infections can be among its causes, although the available statements about Runa’s death do not provide further medical details about the progression of her illness or her treatment.
That distinction is important because no additional medical history has been publicly disclosed by her family or agency.
The DIANNA Project also said that Runa’s wake and funeral were held privately, with close relatives in attendance. The organization asked people not to make individual inquiries, request interviews or post questions about the circumstances surrounding her death on social media.
Her family asks fans to remember her as an “eternal idol”
Runa’s family thanked the fellow performers who had been kind to her, the fans who supported her and the agency members who helped her pursue her dream.
In their tribute, the family said that around one-third of Runa’s life had been spent as an idol and described how much she loved the people around her. They asked supporters to keep her memory alive as an “eternal idol.”
The family’s message came after the private funeral and alongside the agency’s request for privacy.
For those who had followed Runa’s activities, her September 20 performance now stands as her final appearance on stage. Just days later, the young performer was gone.
Runa was born on April 16, 2018, and was eight years old when she died. Her brief career had been closely tied to the DIANNA Project in Nagoya, where she was developing as an idol performer.
The circumstances of her death have drawn attention largely because of the short period between her final performance and her death. But beyond that timeline, the statements from her family and agency have focused on remembering Runa for the life she lived and the dream she pursued from childhood.
For her family, that memory is now the lasting part of her story.
