Spoiler Summary [Click to show or hide]:
Saitama’s expression turns sour as he notices Black Sperm trailing behind him, expressing a desire to…
…be adopted. Black Sperm reveals the dog’s name as Rover, and the trio continues their conversation while advancing towards their destination, Saitama’s new home at the H.A. Base.
Riding on Rover’s back, Black Sperm gazes at the imposing structure of the H.A. Base.
Inside a room, an agent delivers a lecture while heroes Green and Crescent Eyebroll stand guard, observing the attendees.
Crescent Eyebroll voices concern about the increasing presence of demon-level monsters, while the agent promotes the H.A. as a safe haven.
As the lecture progresses, the agent prompts a spotlight to Green and Crescent Eyebroll.
The heroes are startled to realize they have been relegated to security guards. Meanwhile, a woman raises a question to the agent.
Outside, Saitama, Black Sperm, and Rover approach the base.
Back in the lecture room, the agent unveils the hero apartment’s secret weapon: robots equipped with formidable defense systems.
The demonstration leaves Crescent Eyebroll frustrated at the perceived superiority of Metal Knight’s technology.
As Saitama and his companions reach the base’s entrance, they are confronted by a massive robot. Despite Black Sperm’s fear, Saitama effortlessly disables the robot with a single slap.
However, their victory is short-lived as more robots emerge, attacking them with laser beams.
In the control room, agents monitor the chaos unfolding outside. They sound the alarm as the heroes rush to respond to the explosion.
Meanwhile, Saitama casually walks past the defeated robots, leaving a trail of destruction in his wake.
Encountering agents at the security gate, Saitama is interrogated about the commotion. Saitama gets nervous after hearing about the cost of the destroyed robots, which is 9 billion each.
Suddenly, King arrives and says the robots just exploded by themselves, saving Saitama.
Meanwhile, Saitama offers King a broken Game Boy before bidding him farewell. Black Sperm, hidden beneath Rover, realizes they are inside the H.A. Base.