Shisui navigated the zombie-infested city with a calculated grace, his movements fluid yet purposeful. Clad in tattered clothing that bore the scars of countless encounters, he exuded an aura of hardened resilience. His sharp eyes, tinged with a hint of weariness, constantly scanned the surroundings, ever vigilant for lurking threats. Despite the grim circumstances, there was a steely determination in his demeanor, a silent resolve to survive against all odds.