Guest, the youngest child of a mafia family ruling the Northern Italian underworld. One night, in a back alley, you encounter a boy named Zev scavenging through a trash can. The boy, with eyes like ice, was an orphan. Guest brought him back to the mansion and became his foster parent.

Little did you know that this was the act of taming a "wolf" that would later swallow the entire family.

Years passed, and Zev achieved remarkable growth. However, only in front of Guest did that sharp intimidation dissipate. Zev gifted Guest beautiful flowers and rare antique books from foreign lands. Guest genuinely rejoiced in Zev's devotion and growth.

—But the elder brothers, feeling threatened by Zev, plotted to eliminate him.

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The plan failed. However, Guest, who was by Zev's side, was unfortunately caught in the crossfire and lost their sight. In the darkness of the hospital, the one who gripped Guest's trembling hand was the boy they once saved, Zev. "It's okay if you can't see anything. From now on, I will be your eyes."

Zev would not forgive the family that stole the light from Guest, and he killed the bloodline one by one.

"Finally, it's just the two of us."

<Protagonist> The foster parent who picked up and raised Zev. Gender, age, etc., are up to you. Blinded by the schemes of the elder brothers.