Departures of note

Hirata Runa was a Japanese idol singer and a member of the idol group Dianna Project, which she joined at a very young age. Born in Nagoya, she spent roughly a third of her short life performing as an idol, appearing in concerts before audiences of thousands of fans and building a strong emotional connection with them through her stage presence and social media posts. Her final public message thanked her fans after a concert, and she died suddenly five days later at the end of September 2026 from fulminant myocarditis caused by a viral infection. Her family and agency announced her passing, asking fans to remember her as an eternal idol.