Grave of the Fireflies

Story:
This is a movie taking place on World war II in Japan.
The story is about these two children who are orphaned children,Seita
and his younger sister,Setsuko. They both were wondering around
Japan trying to try their very best to live. The only family member
they went to is their aunt,which they had to leave from aswell.
Their aunt does not give them the right things they needed,
and treat them as if they were just some pets,she steals
their mother's clothing and such things.
Seito and Setsuko had no where to go,they lost their parents in the
war,their mother died during the bombing,and their father
died aswell in service for the Imperial Japanese Navy.
They both lived in a small cave where there were so many Fireflies,
and these fireflies give them light. But days after days
Setsuko had a high fever,due to the place they're living,
amount of food supplies and the bombing problem.
Setsuko later died,and he,Seita was all alone in Japan,
without his sister,but later Seita died aswell.
If all of you are wondering why you see Seita intrain station
again,its because it shows you what really happens for Seita at first
and why he died in such place.