Death: By his possessed sister
He fought fiercely "Give her back!" He yelled at the monster who had taken control of his sister, She suddenly put her hands on her head, then she looked at him "...b-brother?" She said, "Aria?!" Aster ran towards his dear sister and hugged her tightly...
"...Wrong choice, Aster"
He yelled out in pain as his light was taken out of him, it was crushed by Zeos's hand and the moment it disintegrated...
He had died
...His mother arrived too late
(I might make a part two?)