Hello! News Service (@hipnewsservice) Tweeted:Sato Masaki's irritable bowel syndrome has not improved. She will refrain from all activities until the end of April. As such, by luck of the draw, her solo performance spot at Hina Fes will instead go to Asakura Kiki. https://t.co/oAuDegljc1 https://twitter.com/hipnewsservice/status/1374314959698595843?s=20