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...
Grant the greatest happiness to 
the greatest number of people!
!امنح أكبر سعادة لأكبر عدد من الناس
Schenke …
¡Concede la mayor felicidad
a la mayor cantidad de gente!
¡Concede la mayor felicidad
a la mayor cantidad de gente!
Un bonheur maximum,
pour un maximum de personnes !
Concedete la felicità più grande
al più grande numero di persone!
Conceda a felicidade máxima
ao maior número de pessoas!
Даруйте огромное счастье 
огромному количеству людей!