Sue-chan, the youngest of the Mitama family, has a weak constitution. Manami and her triplet sisters are always worrying about her. On the other hand, Himeno's niece, Shino-chan, isa very curious girl. She asks Himeno all kinds of questions as they go for a walk, and looks adorable doing it. All the little ones—Himeno's niece Shino-chan, as well as Manami's triplet sisters and baby sister Sue-chan—live their own stories.
My onee-chan taught me 
about this stuff, too.
أوني-تشان علّمتني عن 
.تلك الأشياء أيضًا
Das hat mir meine
Cousine beigebracht.
Mi prima mayor me enseñó mucho.
Mi prima mayor me enseñó mucho.
Moi, c’est ma cousine
qui m’a tout appris.
Me le ha insegnate tutte la mia sorellona.
Minha onee-chan aprendeu isso 
com suas onee-chans e me ensinou.
Моя сестрёнка научила меня всему этому.