Nooooooo, why did it end like that?! They didn't even explain the ending, no backstory and...

Nooooooo, why did it end like that?! They didn't even explain the ending, no backstory and everything. Why did they rushed the ending ಥ╭╮ಥ

I was even looking forward to whatever reason the mage has as to why he wants her rebirth, they didn't explain it. It ended just like that. I was so curious huhu the ending is disappointing ಥ_ಥ