All done with their mock exams, the Himeno-Naoko-Mika trio spot
their pottery club advisor Mami by the train station and impulsively decide to tail her.
They pass through a forest, walk by a lake and finally reach a mountain.
Where exactly is Mami going?!
but for some reason, 
we're being detectives now.
لكن لسببٍ ما، نقوم بدور متحرّيات حالياً
Aber aus irgendeinem Grund
spielen wir nun Detektiv.
por alguna razón,
terminamos haciendo de detectives.
sin saber cómo,
terminamos haciendo de detectives.
J’ignore pourquoi, mais on se retrouve
à jouer les détectives.
ma per qualche motivo
adesso stiamo facendo le investigatrici.
mas, por algum motivo,
viramos detetives.
но каким-то образом
превратились в детективов.