Nothing persists across time. Not life. Not society. Not even memories, no matter how much one clings to them. Instead, losses, despair, and hopelessness fills the world.

That was a truth that Gray acknowledged. All efforts in the end are meaningless. Nothing.

Even so, he continued moving as humanity did, even knowing that his actions were ultimately dust in the wind.

A promise that must be fulfilled. A hero that made a vow...

And a person whose existence in that world meant nothing at all.