As she began her suffering from being an orphan, together with her brother she strives to get them something nice to have and eat, that is her only wish, giving the best for her most beloved brother...until something happened that change both their lives. 

The obsidian ring that she holds lits up and swallow them.

"Sis where are we?"
"..."

Roaming their eyes to an unfamiliar scenery where rivers are floating above the floating islands and many unknown beast flying around with humongous body and wings.

The Beginning of Your End