Toy Summoner from the Data World

This is a simple, old-fashioned hero story.

A young man sacrificed himself, saving the world and his siblings at the same time.

Step by step, he became a legend in that world, leaving behind countless indelible marks.

Some say he changed history; others say he changed everyone's fate.

He was a hero, but also a tragic soul.

And the story we are about to tell begins here.

Ten years after the young man's death, a girl who bears the fate of the gears resolves to betray the world and destroy with her own hands the peace he built.