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. 
See ya!
!إلى اللِّقاء
Bis dann!
¡Adiós!
¡Adiós!
Au revoir !
Ciao ciao!
Até mais!
Пока!