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...
Don't lower your right arm.
.لا تنزلي يدك اليمنى
Den rechten Arm nicht runternehmen.
Mano derecha arriba.
Mano derecha arriba.
Baisse la main droite… ou pas !
Braccio destro sempre su.
Não abaixe o braço direito.
Правую руку не опускай.