マリア様がみてる 4thシーズン

Yumi Fukuzawa has settled in as Sachiko Ogasawara's petite soeur at Lillian Girls' Academy, and this fourth season hands her the harder half of the arrangement: choosing a petite soeur of her own. Around that decision the Yamayuri Council is staging a joint theater production with the neighboring boys' school, Hanadera Academy, while the school festival closes in. The Rose Mansion stays the center of it all, where the Roses and their sisters sort out casting, rehearsals and who ends up paired with whom.