A bald man in armor began to give a speech. 

Hammerhead (The Leader of the Paradisers!) 

Hammerhead: Why do people have to work? Why do you have to pay money to eat? Can't we just share? Where is freedom in the world? The rich grow fat, all are slaves to labor, while the poor die! Is work fun?! No! Of course not! We refuse to work! I Hammerhead will make a change! Let those who want to work support everyone else! We're going to create a utopia! 

His men, the Paradisers looked around. 

Paradiser: Boss, nobody is listening. 

Hammerhead: AAAAAAAAARGH! WHAT MADNESS! COME ON! Zeniru is the richest man in the city! First, we'll destroy his house so people will know how serious we are! 

They approached a big building. 

Buck Toothed Paradiser: This whole building is Zeniru's house! 

Hammerhead: He must have acquired his wealth dishonesty! I will not allow it! DESTROY IT! 

Paradiser: Yes Sir! 

One of the Paradisers punched the building and it collapsed! 

Paradiser: Target demolished! 

Hammerhead: Good. Stealing those new battle suits from that organization paid off! 

Buck Toothed Paradiser: Uh ... Boss, it was a different building. Zeniru's house is further up. Sorry!

Hammerhead: That's okay! Everyone makes mistakes! What's important is that we learn from them! 

Paradisers: YEAH! 

???: STOP RIGHT THERE VILLAINS! 

A guy on a bike rode up as he parked it. 

???: I AM THE BICYCLIST FOR JUSTICE KNOWN AS MUMEN RIDER! 

Mumen Rider (Member of the Hero Association! He is a C-Ranked Hero who has a firm and righteous belief in protecting the innocent!) 

Citizens: IT'S MUMEN RIDER! WE'RE SAVED! I LOVE YOU MUMEN RIDER! 

Hammerhead: Please. 

Mumen Rider: HERE I COME! AAAAAAAAAAAAAAAAAAAAARGH! 

He charged in, and Hammerhead knocked him down in one punch! 

Citizens: OH NO! SOMEONE GET A DOCTOR! 

At Saitama's apartment... 

You, Ruby, Weiss, Blake, and Yang were staying with Saitama for the time being, and everyone was fast asleep. 

https://youtu.be/DLngcULFlzs

Saitama's scream woke all of you up. 

(Y/N): Geez, can you not have a crazy nightmare on days like this? 

Blake: (rubbing her ears) Tell me about it, that was super loud. 

Ruby: Hey, come on! We should get those spirits up! Now, let's see what's going on. 

Ruby turned on the TV. 

Reporter: Terrorists identifying themselves as the Paradisers continue to terrorize City F. They have seriously injured several heroes, and the situation remains out of control. We have also identified their leader as Hammerhead, a man with a B-Class Bounty on his head! He has been responsible for numerous violent incidents. He is a large man, standing seven feet tall and weighing 462 pounds. He once fought 20 opponents in a street brawl and sent them all to the hospital. According to a rambling message the group sent to a TV Station, they will continue their onslaught until the establishment of a world where not working isn't a crime. 

(Y/N): Great, just what we needed. Another villain who does the wrong things for the right reasons. 

Reporter: All the group['s members display shaven heads. 

Saitama froze at that. 

Saitama: WHAT?! WE MUST STOP THEM! 

Weiss: Wait, this is about them having- 

Saitama changed into his costume. 

Satiama: They're biting my style! If they copy me, they will think I'm a villain! 

(Y/N): Let's just go. We'll be doing the world a favor. 

Meanwhile... 

Zeniru was informed by his butler of the situation. 

Zeniru: It wouldn't look good for me to run from terrorists. 

???: No need for that. 

Zeniru: S-SONIC! 

Speed O Sound Sonic (A ninja assassin for hire!) 

Zeniru: Is it all right if I leave this to you? 

Sonic; Of course you can. Worry about their lives. Thanks to their unusual suits, I may not be able to control myself. Disposing of the mountain of bodies will be a bigger problem. 

He began to walk out. 

Back with the Paradisers... 

Hammerhead saw the building they were searching for. 

Paradisers: There it is Boss, the GOlden Pile O Poop! 

Hammerhead: Alright, let's- 

But then he noticed something moving. 

Hammerhead: Who's there?! 

Sonic appeared. 

Sonic: Hello Hammerhed, I work for Zeniru. I should warn you, none of my opponents have ever beaten me. You see I'm a perfectionist in my work. If you give up now, I'll let you walk away with your life. So, what will lit be? 

He put on a sadistic face. 

With you guys... 

Everyone was running from Saitama. 

Citizens: TERRORIST! 

Saitama: I'M NOT A TERRORIST! 

(Y/N): Okay yeah, we have to take those guys down fast. 

Back with the Paradisers... 

Hammerhead could only watch as his men were getting their heads decapitated and sliced into ribbons! 

Soon, he was the only one left! 

Hammerhead: WHY YOU! 

He slammed the ground, causing a massive rupture! 

But Sonic clung to a tree. 

Sonic: HAHAHAHA! What are you doing? Trying to intimidate me? I bet you can't even see me. 

Hammerhead: WHY YOU! 

He grabbed a massive rock and threw it at the tree! 

But Sonic dodged and the rock destroyed the poop on Zeniru's building! 

Hammerhead continued to throw rocks as Sonic dodged over and over again. 

Sonic: He's not running but still attacking? I guess he's not as dumb as I thought. 

He dodged over and over as he smirked wickedly. 

The ninja covered his mouth in an instant. 

Sonic: Guess my bad habit is coming back. 

Hammerhead: YOU ZENIRU HIRED DOG! I FIGHT FOR LOFTY IDEALS! I WON'T LOSE TO A DOG LIKE YOU! 

Sonic: Huh? 

He noticed a bunch of rocks in front of him on both the right and the left. 

Sonic: I get it now. He is an idiot. He obviously lined up the boulders to lure me in. 

Hammerhead picked up another boulder. 

Hammerhead: HA! I've got a lot of rocks left! Stop me or I'll keep throwing them! 

Sonic: You think you can handle my speed, if you know which direction I'll come from? Fine, I accept your challenge. 

Sonic raced towards Hammerhead at supersonic speeds and Hammerhead picked up a tree! 

Hammerhead: Here he comes! I don't even need to see him! 

He slammed the tree down! 

Hammerhead: In hell, you'll regret the day you ever cross- 

But then Sonic threw a kunai right at the back of Hammerhead's head and he collapsed. 

Sonic then contacted Zeniru. 

Sonic: It's over. No, unfortunately, I couldn't control myself. Yes, Hammerhead's body is here. Right I'll head back t- 

He then saw that Hammerhead was gone. 

Hammerhead ran for his life. 

Hammerhead: Whew! That was too close! Good thing my skull is many times thicker than normal! I've never lost a fight before! I swear someday I'll kill that- 

He then saw you guys. 

Hammerhead: Hey, do you guys want to join the Paradisers. 

Ruby: Sorry, we're heroes. 

Yang: And you're Hammerhead, so we're going to kick your ass! 

Saitama: For personal reasons of course. So where are your- 

Hammerhead: DIE! 

But then you caught his fist. 

(Y/N): RUDE MUCH?! 

Hammerhead: HUH?! 

He jumped back. 

Hammerhead: How did- 

(Y/N): Really? This suit is how much? 

You appeared next to him. 

Hammerhead: How did- 

Weiss: Plus, it looks very bulky. I mean, we have friends who make better battle suits than this. 

Blake: And it makes you very slow as well. 

Hammerhead: SHUT UP! I WENT THROUGH A LOT OF TROUBLE OF STEALING IT! IDIOTS LIKE YOU DON'T EVEN KN- 

(Y/N): KAIOKEN! 

Hammerhead: Kaio-wh- 

You punched the suit and it shatttered! 

Hammerhead: ARGH! WAIT! I JUST DIDN'T WANT TO GET A JOB! 

(Y/N): Look, I understand your reasons, but this is just wrong. Just promise you won't(Y do this again, and it'll be fine. 

Hammerhead: I PROMISE! I'LL BE GOOD! I SWEAR! 

(Y/N): Good. Now run along. 

He took off. 

Saitama: Well ... he was all talk. 

Blake: I swear, some people just can't handle society. Yet again, it's understandable. 

Weiss: And it was just him? 

Ruby: Yeah, where are the- HUH?! 

Sonic appeared. 

(Y/N): Are you looking for Hammerhead? If so, he went that way. 

Then he tried to attack Saitama, but Saitama broke his sword. 

Sonic: HUH?! 

Saitama: I'm not a Paradiser. 

Sonic: LIAR! With a head like that, you can't deny it! 

Saitama: No seriously! LOOK! I'm a hero for Fun! 

Sonic: I don't know you. 

Saitama: 

Ruby: JERK! How can you say that to him? 

Sonic: You would defend a Paradiser? 

(Y/N): He's not a Paradiser! 

Sonic: Well, I cannot accept someone stopping my attack! I was born in a ninja village, and have boned my skills since I was a little boy. But my attacks being stopped is unacceptable! 

Weiss: Prideful much? 

Sonic: I- Shut up! I will- 

(Y/N): Ugh! Chit chat! 

Sonic: I- 

(Y/N): Chitty chat chat chit chit chat. 

Sonic: I will- 

(Y/N): Chit chat. 

Sonic: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARGH! SHUT UP! 

He started to attack you at blinding speeds, which you blocked over and over again until- 

(Y/N): DETROIT SMASH! 

You punched Sonic right in the balls! 

(Y/N): OH SORRY! That wasn't on purpose! I- 

Sonic: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARGH! 

https://youtu.be/GqBRZi8mmDU

Sonic was trembling in pain. 

Sonic: I am an amazing ninja who contracts for everything from assassinations to being a bodyguard. I am Speed O Sound Sonic! But I will postpone my work for a while. Having found a worthy opponent in you, I must focus on my training. Tell me, what is your name? 

(Y/N): (Y/N) (L/N). 

Sonic: (Y/N) (L/N), the net time we meet, yo are a goner! I, Speed O Sound Sonic, will destroy you with the ultimate arts of a ninja! 

(Y/N): I accept your challenge! 

Weiss: This guy is an idiot, isn't he? 

(Y/N): Yep. 

Ruby: He seemed really fast though. 

Later... 

Genos showed up. 

Genos: Speed O Sound Sonic? Who is he? 

(Y/N): Well, we were dealing with the Paradisers. 

Yang: Mainly just Hammerhead. 

(Y/N): And then he showed up, I punched him in the crotch, then he declared me as my newest rival. 

Weiss: Amongst the several ones you've made. 

(Y/N): Yes, and then he left. Also Sataima is down in the dumps. 

Saitama: No one ... knows who I am. I mean it's been three years since I started my work as a hero. I've defeated several superhumans, subterranean monsters, terrorists, and evil organizations. I've never sen another hero do as much as me. Everyone should know about me now! I should have some fans! It's weird that I have to live such a meager existence in this ghost town! Sonic said, "I don't know you." 

Ruby: Even worse! They thought Mr. Saitama was one of Hammerheads minions. 

Genos: Master, you're not even listen in the Hero Registery? 

(Y/N): Wait ... are you saying heroes have to register in this world? 

Genos: They appeared three years ago. When a villain attacked the tycoon, Agoni's grandchild, a passerby offered help. When he heard about it, he devised this system. And used his personal wealth to establish the Hero Association. 

(Y/N): Then let's register! 

Ruby: Yeah! All of us together! 

Genos: I have no desire for that. 

Ruby: WHAT?! Why Genos? You're a cyborg of justice. 

Genos: I only desire to get stronger so that I can- 

Saitama: If you come with us, I'll make you my student. 

Genos: I accept! 

Blake: He sure changed his mind fast. 

Yang: Heh, that's for sure! Alright! Let's become Pro Heroes for this world!