Onishi Momoka will participate in "Yohra Ver1.1a", a stage play based on the game, as the character "No. 9". All the performers of this play will be female, Taniguchi Megu from AKB48 will also perform in this play.
The stage play is scheduled to be on December 3rd to 6th. Only around 50% capacity will be allowed in the theater as safety measure of the pandemic.