The last Sion

Achelous was just a boy, he lost his father and brother at the same time, shortly after, Celestial beings came down to his homeland to unlock the formation on their planet. Soul shards were unlocked for everyone alive. Gaining them, Achelous found he got increasingly strong as well as his very soul, seemed to be more and more unbreakable, he is tasked with finding the last few after a good friend left him. He has yet to discover, that he is the last scion.