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...
Are you Nee-chan's friends?
هل أنتما صديقتا نيتشان؟
Seid ihr Freundinnen
von unserer Schwester?
¿Son amigas de mi hermana?
¿Sois amigas de mi hermana?
Vous êtes des copines
de notre sœur ?
Siete amiche della sorellona?
Vocês são amigas da Nee-chan?
Вы подруги нашей сестры?