On April 23, it was announced that voice actress Mizuki Nana has tested positive for COVID-19.

Her official website states, "She will be recuperating and corresponding accordingly under guidance of the health center. We have been taking infection control measures, but we apologize for the worry and inconvenience caused to fans and parties involved." 

Mizuki's official Twitter account also says, "We have confirmed that Mizuki Nana has been infected with COVID-19. Her fever has come down to normal, and her symptoms have stabilized."