She was just 8 years old. May she rest in peace.
7 minutes ago
8-year-old idol trainee Hirata Luna suddenly passed away due to complications stemming from influenza.
According to a report from Yahoo Japan via SPOTV, Diana Project, a Japanese girl group development group, announced the tragic passing of Hirata Luna.
Nagoya trainee Hirata Luna has passed away due to myocarditis resulting from influenza. The wake and funeral were held in accordance with the family’s wishes, attended only by close relatives.
We extend our deepest gratitude to the fans who have supported Hirata Luna and to all those in the industry who have shown their support. Out of consideration for the family’s feelings, we ask that all individual inquiries, media coverage, and questions on SNS related to this matter be refrained from.
— Diana Project
Hirata Luna’s personal X account run by her parents also confirmed the news, stating that she passed away around 4am on September 25.
突然のご報告となり申し訳ありません。
平田琉七は、9月25日午前4時頃、永眠いたしました。 https://t.co/UXCL8UgB5L
— 平田琉七【DIANNAプロジェクト練習生】 (@DP_HIRATALUNA) September 28, 2026