One day, Yuuki heads out to deliver an item to a client. When Pecorine and the others meet up with him, they discover that the client is Tsumugi, a member of the popular idol group Carmina, and Yuuki is being made to wear a cute outfit at her behest. The group is naturally confused, but there seems to be a reason behind it...
It's called Carmina! Remember that!
!ندعى كارمينا! تذكّروا ذلك
Wir sind Carmina! Ist uns ’ne Freude!
Ci chiamiamo Carmina! 
Non dimenticatevi il nostro nome!
Somos as Carmina!
Lembrem-se do nosso nome!
Называемся «Кармина»! Очень приятно!