is the tenth episode of the first season of the popular anime series One-Punch Man . It originally aired on December 7, 2015, and serves as the explosive beginning of the "Alien Conquerors" arc.
: The speed and scale of City A's destruction emphasize the "unparalleled" nature of this new threat compared to previous monsters. 10 : Unparalleled Peril
: While the others strategize, Saitama is already inside the ship, punching through reinforced walls and decapitating alien lieutenants like Groribas with a single casual blow. is the tenth episode of the first season
: For the first time, we see nearly all the S-Class heroes in one room—from the bratty psychic Tatsumaki to the stoic Silver Fang and the elusive Metal Knight . Saitama is already inside the ship