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. 
If she was actually happy and smiling from 
the bottom of her heart like a human...
أنّها إذا كانت سعيدة فعلاً وتبتسم
...من أعماق قلبها كما البشر
„Was, wenn das echte Freude ist
Si elle est sincèrement heureuse
Se fosse davvero felice
E se ela realmente estiver feliz...
«Что, если она действительно счастлива
и испытывает настоящие чувства?»