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.
and the circle has a circle side, and the 
triangle one has a triangle side, right?
،والدائرة لديها جوانب دائريّة
والمثلث لديه جوانب مثلّثة، صحيح؟
Bei dem Kreis gibt’s einen Kreis.
y el círculo tiene de círculo
y el triángulo de triángulo.
y el círculo tiene de círculo
y el triángulo de triángulo.
quello a cerchio ne ha a forma di cerchio e
quello triangolare ha delle facce con tre lati, giusto?
o círculo tem um lado de círculo, e o 
triângulo tem um lado de triângulo, certo?
а у круга одна сторона круглая, 
а у треугольника — треугольная.