Finally, construction on the secret hideout begins! When Serufu invites Purin to build it with them, Purin’s secret is revealed. Together, the club members work through rainy days and sunny ones while their summer vacation deadline draws nearer.
So, it's finally time to 
start construction, is it?
إذًا فقد حان الوقت أخيرًا لبدء البناء؟
Endlich ist es so weit, was?
Der Bau beginnt!
Por fin van a construir, ¿eh?
Por fin vais a construir, ¿eh?
Les travaux démarrent enfin,
hein ?
Finalmente iniziate la costruzione, eh?
Chegou a hora de começar
a construção, não é?
Наконец начинаете строить?