The Weeping loss of a core

follow the story of two siblings running across the universe to save themselves and their people. A determined younger brother and a gentle older brother. together they get rid of burdens, but what happens when they encounter an odd apparition that can make everything change?

Note: this is an original story inspired by the anime "Madoka Magica", so expect to meet similarities. (Sometime).

I also didn't expect to have the motivation to finish this, as it is my first story I've written, so pay no mind to the lack of a red line.