Koharu tries to convince her dad to let her go on a fishing and camping trip with just Koharu and Koi, which causes a disagreement in the family, and results in Koharu and Hiyori running away from home.
And this is why you're a child.
.ولهذا السبب أنتِ طفلة
Genau wegen so was bist du ein Kindskopf …
Por eso te digo que eres infantil.
Voilà pourquoi
on te traite comme une gamine !
È proprio perché ti comporti così 
che ti dice che sei una bambina!
É por isso que te consideram uma criança.