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...
Now, listen. You only kiss 
people you love-love.
اسمعن، يجب أن تقبلن
.الأشخاص الذين تحبونهم فقط
Hört gut zu. Küsschen darf man nur Leuten
geben, die man ganz doll lieb hat.
Escuchen. Solo se besa a quien quieres.
Escuchad. Solo se besa a quien quieres.
Compris ? On fait des bisous
qu’aux gens qu’on aime fort fort !
State bene a sentire. Si danno i bacini
solo alle persone a cui si vuole tanto bene.
Prestem atenção. A gente só beija
quem a gente ama-ama.
Целовать можно только тех, 
кого взаправду любишь.