Natsuki's life experiences a big shift after becoming a teacher and starting a salvaging service. Rumors of a school lit with electricity attracts new students, and activities around the school regain a sense of liveliness. 
It's quite simple...
...المسألة بسيطة
Ganz einfach. Komm mal her.
Muy sencillo. Acércate un poco.
Muy sencillo. Acércate un poco.
C’est très simple.
Approche, deux secondes.
Niente di più semplice.
É fácil.
Всё очень просто.