18-year-old Rina Matsuno, a member of the idol group Shiritsu Ebisu Chuugaku, has suddenly passed away on February 8.
Matsuno did not participate in the group's concert on February 7 due to poor health. She stayed at home to rest, but was later admitted to the hospital where she would later die early on the 8th.
According to reports, Matsuno's condition was not alarming while at home on the 7th; however, her health suddenly and unexpectedly deteriorated.
Details regarding Matsuno's medical condition or cause of death were not immediately revealed.
Matsuno's sudden death came as a surprise to fans who had no indication she was even sick. On February 7, the idol had posted a photo to Instagram of herself on a trip with her family over the weekend. She appeared healthy and happy at the time.
Shiritsu Ebisu Chuugaku has cancelled its February 8 activities as the group mourns the loss of one of its members.