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...
But since you're big, you don't kiss her,
 even though you love-love her?
ولكن بما أنّكما كبيرتان، فإنّكما
لا تقبلاها على الرغم من أنّكما تحبانها؟
Weil ihr schon groß seid, gebt ihr
euch keine Küsschen mehr?
¿Y como son grandes
no se besan aunque se quieran?
¿Y como sois grandes
no os besáis aunque os queráis?
Vous vous faites plus de bisous,
les grandes filles ?
Ma non vi date i bacini anche se
vi volete tanto bene perché siete grandi?
Mas vocês são grandes, 
então não a beijam, mesmo que a amem-amem?
Вы не целуете её, 
хотя и взаправду любите?