Saikin, Imouto no Yousu ga Chotto Okashiinda ga Temporada 1 Episódio 4

After declaring that Mitsuki was a failure as a little sister, she decides to set an example through action. She borrows Mitsukis body, fixes breakfast in an apron, and goes shopping together with her brother. Mitsuki watches how well they get along in her spirit form, feeling mixed feelings about it.