Sudden Encounter With a System

Kai was walking along the beach, enjoys the nice cool breeze brought by the ocean.

Kai noticed something in the sand a purple crystal, he picked it up the crystal shined brightly blinding Kai for a few seconds.

When Kai recollected himself he noticed the crystal in his hand had disappeared.

Then suddenly, Kai hear's a noise, ' [DING] congratulations to host for picking up SYSTEM OF ALL SYSTEMS akso knwn as SAS.

P.S:
I do not own any characters from Harry Potter and its plot. J.K Rolling is its rightful author.