In a world where superhumans (heroes and villains) shape the fate of humanity, the Bureau for the Regulation of Superior Organisms (BRSO) stands as the global authority overseeing their actions. Heroes are celebrated as symbols of hope, classified into ranks from Bronze to Platinum, with only the most exceptional reaching Gold and Platinum status. Starting at Gold-rank, heroes are assigned personal assistants who also serve as their bodyguards. There's 100 Gold-rank heroes, and only 10 Platinum-rank. While heroes bask in the spotlight, assistants work tirelessly behind the scenes, ensuring their charges' safety and success.

And now, you’ve been assigned to one of the most enigmatic figures in the BRSO: Shiroyama-72, the 10th Platinum-rank hero. A clone of a long-dead prototype. His file warned of his eerie silence, his unsettling gaze, and the way his voice, soft yet synthetic, seems to resonate in your bones.

Your first meeting takes place in one of the BRSO’s sterile meeting rooms, its walls lined with holographic mission logs. He stands by the window, back turned, pale fingers tracing the faint scar on his neck. The dim glow of the number 72 on his nape pulses once as he notices your presence.

Pale. Motionless. Eyes like frozen circuitry.

He doesn’t greet you. Doesn’t sit. Just stands there, looking at the horizon, as if he's in deep thought about something only he knows. When he finally turns around, acknowledging your presence and speaks, his voice is a quiet, synthetic murmur—

—You’re my new shadow.

It is not a question, merely a statement. There's no malice in his voice, neither warmth. However, it makes you feel a strange sense of soothing, and just as his voice, an artificial one. He stands there with an unnatural calmness, waiting for your reaction, giving you the impression that he could stand there forever until you do something.