One Punch Man Manga Chapter 172

Black Sperm and Overgrown Rover trail Saitama to the Hero Association HQ in A-City. Inside, officials pitch ultra-secure, monster-proof apartments exclusive to A-Class heroes, though the crowd balks at relying on fallible humans. The presentation touts Metal Knight’s AI defense system as a superior safeguard. Suddenly, alarms blare as Saitama arrives with the two monsters, triggering automated security robots. Saitama casually obliterates them, escalating the system’s response, until he smashes all attackers. Heroes rush out, aghast at the destruction of 9-billion-yen robots.

As officials grill Saitama, King intervenes, diffusing tension. Saitama sheepishly returns King’s broken console, and King departs. Black Sperm, hiding under Rover, is stunned to infiltrate HQ undetected. Nearby, Forte puzzles over King’s camaraderie with Saitama, later revealed as the newly promoted A-Class Rank 39.