Zayyn Illya Kovalenko was just an ordinary boy, an orphan from the outskirts of Romania.

Until one meeting changed everything.

A simple encounter with a certain silver-haired young man.

That night, as his world collapsed, a single resolve was born.

A creed that would lead him down a path of grief, darkness, and blood.

A creed to kill every single Devil.

---- Author's Note: 

This is an original not a translation.

The story begins four years before the canon timeline and will eventually follow the canon events. While this is not an AU, several characters from existing mythologies will be introduced into the world.

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