Himeno has a young cousin named Shino-chan. Manami, as well, has three young triplet sisters, and an even younger fourth sister. One day, Manami orders her triplet sisters to stay home and watch their youngest sister while she goes out. This leads the four youngest Mitama sisters to experience a truly mysterious phenomenon...
No, we decided in advance 
that if an agreement
لا، لقد قرّرنا سلفًا أنّه إلّم نتوصل
Doch.
No, antes decidimos que si no llegábamos
No, antes decidimos que si no llegábamos
Non.
No, avevamo deciso in anticipo
che se non avessimo raggiunto
Não. Decidimos de antemão que,
Нет, мы заранее договорились, 
что если до трёх