In their quest to build a rocket, Umika and her friends decide to visit Matataki, their classmate who is a skilled engineer, but doesn't attend classes. However, they soon find out that this mechanic's got one short fuse!
One time?!
!مرّة واحدة؟
Nur ein Mal?!
¿Solo una vez?
¿Solo una vez?
C’est tout ?
Una volta sola?!
Uma vez?!
Всего раз?!