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...
Think nothing of it. She can be naughty
for such a shy girl, huh?
لا بأس. يمكنها أن تكون مشاغبة
بالنسبة لفتاة خجولة، أليس كذلك؟
Halb so wild.
No pasa nada. Para ser tan callada,
es muy traviesa, ¿no?
No pasa nada. Para ser tan callada,
es muy traviesa, ¿no?
Pas de problème, elle a l’air
d’avoir surmonté sa timidité.
Non preoccuparti.
Não se preocupe. Ela é bem bagunceira
pra uma garota tão tímida, né?
Она может быть несносной, 
хотя с виду такая тихоня.