Nakanishi Aruno is disliked and bullied by other Nogizaka46 members because she's different from them. After one of them lock Aruno and tell her to not come back, she decides to come back definitely.

Actually...

Musical featuring members of Nogizaka46 5th Generation as characters from the Sailor Moon manga and anime franchise. It is produced as part of the celebration surrounding the 30th Anniversary of Sailor Moon.