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.
But the triangle can be square, too.
.ولكن يمكن أن يكون المثلث مربّعًا أيضًا
Aber das hier hat
ein Viereck und ein Dreieck.
Pero el triángulo puede ser cuadrado.
Pero el triángulo puede ser cuadrado.
Mais il y a un rectangle
sur le triangle.
Ma il triangolo può essere anche un rettangolo.
Mas um triângulo 
pode ser quadrado, também.
Но треугольник может быть 
и прямоугольным.