In mere moments, the once-thriving star system had been reduced to rubble.

“…Damn it. So, it’s come to this?”

Kalstein sighed, his gaze lingering on the smoldering remains of Metropolis.

Märchen.

The enigmatic entity designated as No.10 on the Single Number registry. A peculiar anomaly even among its ranks.

Unlike other Single Numbers, Märchen was specialized in a way that made it uniquely suited to targeting humanity.

“Bastard…”

Its core tactic was not brute force but sowing discord and division through its dimensional authority.

Even so, against Kalstein, empowered by not one but two Single Number authorities, Märchen stood little …