Natsuki accompanies Atri who is on her way to school. However, when they arrive, they find that most of the school is underwater. Although they managed to get into the school building, inside it was full of empty classrooms and an unexpected teacher. There, Natsuki is faced with the saddening reality of the lives of the people who remained in their town.
Thermal power, water power, nuclear 
power, geothermal energy, and...
القوّة الحراريّة، قوّة الماء، القوّة النّوويّة
...والطّاقة الحراريّة الأرضيّة و
Wärmekraft, Wasserkraft,
Atomkraft, Geothermie und …
Hay energía termal, hidráulica,
atómica, geotérmica…
Hay energía termal, hidráulica,
atómica, geotérmica…
Charbon, solaire, nucléaire,
L'energia termica,
Tem energia térmica, energia hídrica,
energia nuclear energia geotérmica, e...
Тепловая и гидроэнергия,
атомная и геотермальная, а ещё…