Authors Note: Yay! My first OPM fanfic. I've been meaning to post this a while back, but you know how adulthood and responsibility get in the way...

The sun had not yet cracked its light onto the dark sky as the cyborg had awoken from its slumber. A soft amber glow emitted from his chest as he had activated his operating systems. Only the hum of his body filled the air. He sat beside the table with his legs under his thighs, his hands were folded on his lap. He scanned the room with his motion sensors and found nothing out of the ordinary. A dusty notebook rested in front of him. Once he was fully functional, he opened the notebook and read the contents.

September 23rd

5 AM: The morning news followed up on the attack on City X. They state it would be years before the city were to thrive again.

5:30 AM: I watched a documentary about bears and their hibernation patterns for half an hour. It was quite interesting.

6 AM: Headed to the canyon where Sensei and I had trained previously. I focused on making sharper turns while mid-air. Significant leg and core control is needed to do so.

3:15 PM: Visited Dr. Kuseno to upgrade my sleep arrangements. The doctor advised me to not go through with it, but I insisted heavily upon the belief that it would help lower the tension in my body. He gave me the upgrade.

6:47 PM: Went to the store and bought some dishrags and a new broom. The fibers on the older one had begun to fall off.

7:32 PM: I arrived back to the apartment and cleaned.

9 PM: I put my new upgrade to the test. I hope to find the results to be satisfying.

He closed the notebook and placed it back on the table. It was difficult for him to stand up as he had been dormant for quite a while. He thought that he should oil his joints before he heads out to continue his training. He roamed around the room to find his pencil, nearly tripping on the futon he had set up before testing his upgrade. He quickly put it away and continued on to no avail. Out on the balcony, boxes upon boxes of mail and trinkets had been collecting dust outside the apartment. He figured he could open them at a later time and went back in to watch the news.

"-seems that there is going to be a lot of clouds and little sunshine, despite it being almost Spring. The highest temperature is estimated to be 10°C on Thursday while the rest of the week would remain around the 7°C. Expect some heavy rain fall as well in this coming week. And now to Akihiro Ono for the sports."

Genos quickly muted the television. He could care less about the sports industry. He saw this as a chance to clean the unkempt apartment. He took a rag from the kitchen and wiped down every table and counter. He grabbed the room from the storage closet and swept away a sea of dust and lint. Tidying the apartment brought him back to when he would listen to his teacher yell at a contestant on a game show or sniffle to a drama as he washed the dishes. After having cleaned, he placed a teapot of water onto the stove. Making tea was more of a habit rather than him actually wanting to have a drink. Genos sat back beside the table as he wait for the tea to boil.

Genos was taken aback by a loud thud that had hit the window. He focused on the window to see what had collided into it. Another small stone had struck the glass a few seconds after the first. He crouched to his knees and slid the door open to the balcony. He could still hear stones being thrown onto the window. A heat signature was detected from his vision. He pressed his back on the concrete wall and fired up his robot hand for attack. He shot up and aimed his arm out with his palm facing the intruder.

"Wait-Wait-Wait! Don't shoot!" The cyclist waved frantically to him with a wary smile on his face. He cupped the side of his mouth and greeted him in a shaken voice.

The cyborg was dumbfounded. He lowered his arms to his side. What could this man be doing up so early? More importantly, how did he know where he lived? "License-Less Rider? What brings you here?"

"I came here to check on you. Do you mind coming down?"

Genos nodded. It appeared as if everyone visited to "check" on him. Getting to the area was difficult on its own, so it felt as if he was more than obligated to see the cyclist. He walked back to the room and closed the door behind him. He headed to the kitchen turned off the stove. As he proceeded to leave, he glanced over to the television, but was reeled in by an image of a city under construction. The image had grown small and moved to the left where a brunette anchorwoman mouthed the news. He couldn't help but want to listen. He un-muted the channel.

"-n other news, City X is nearing completion since the alien invasion almost a year and a half ago. We have the workers and volunteers to thank for putting countless hours into rebuilding the city. However, the one we should thank the most mysterious hero who saved us all."

"Saitama! I've come to challenge you to a fight to the death!" It bellowed with it's arms crossed in an intimidating manor.

The alien seemed strangely familiar... But the hero couldn't put his finger on it...

"Okay... But have we... met before?" Saitama asked as he rubbed his chin. He examined the alien creature from a lengthy distance as they stood under piles of ruble from the nearly disintegrated city that had once thrived.

"No, we have not. I would not have let you live long enough to see me again," it remarked. "Allow me to alliterate. Picture me as I am, but pink and blue."

Woah. He was the spitting image of the alien that Saitama had fought nearly a year ago. The hero was surprised to have even remember the formidable alien. What was his name again? Brock? Broccoli? Bro...

The alien pointed his thumb to himself and said, "My name is Coros! And I am here to avenge my elder brother, Boros, by killing you! And to restore honor to our noble family!" His deep, maniacal laughter thundered throughout the area.

"... alright." So his name was Boros. All that mattered to him was that he at least remember the face. Only, his self proclaimed brother's color palette consisted more of yellow and white.

With that, Coros had sprinted toward the hero with lightening speed. Coros jumped high and brought his leg up with the intention to smash the human. Saitama raised his arms to form an X and blocked the attack without a single flinch. The alien somersaulted back to his previous spot. He arched back as he inhaled until his lungs were full on air. He shot back up and expelled a large, white beam of energy from his mouth. Seeing this, the hero pulled his right fist back and waited for the stream of energy to hit him. As the beam was close, he stretched out his arm and used its force to send the beam back to its owner. Coros managed to dodge it as it crashed into a building. The punch carried a blanket of dust with it, camouflaging the opponents. Eventually, they had found each other and continued with hand-on-hand combat. The alien had boost his energy by transforming into his final form, which made him more bulk and longer hair.

Saitama was getting annoyed. The fight was dragging for too long and had bored him. While fighting mid-air for a while, they landed back on the ground. He decided to finish the battle with his Serious Punch. The sheer force from the punch was able to send any normal human flying to their death, but the alien had not even moved a millimeter. Sine he hadn't moved, consequently, Saitama's whole arm punched through the aliens stomach. Both of them were frozen with shock from the surprising turn of events. Saitama had tried to free himself, while processing the strange situation. He was almost free, but Coros hunched forward and coughed up onto the hero's arm. Pain had left his mind. He was more perturbed and outraged by the fact that a mere human could have inflicted such damage to him. Before Saitama could free his fist, Coros grabbed onto the hero's forearm and stared him down. Unbeknownst to the hero, the alien had one more gimmick up his sleeve.

Saitama was kinda creeped out.

Again, the same deep, bellowed laughter emitted from him. Then, the alien made a noise in from the bottom of his throat that sounded like a cat about to cough up a hairball. Confused, Saitama froze in place. It leaned back a bit and spat a large, dark blue, almost black, ball of liquid right onto the hero's face.

"FUCK!" Saitama groaned. He was never one to curse, but the pain in his eye's changed that. He used his free arm in an attempt to wipe the sludge from his eyes, only to spread it more across his face. He forcefully removed his arm from the alien and used his cape to wipe the sludge from his face.

Coros continued to laugh as he fell back onto the rubble. Unaware to Saitama, Coros had disintegrated into the air, leaving parts of his skeletal frame behind. The hero tried desperately to wipe the mysterious fluid from his face. The solution felt like it was burning in his skin.

"Sensei!" Genos called. He had managed to find his master after having to fight off a handful of intimidating aliens. The cyborg was able to maneuver his way through the rubble and to his teacher. He was battered and missing his left arm. He had grown distressed when he saw Saitama curling into himself with his cape covering his face. "Sensei, are you alright?!" He asked as he tried to examine the damage. He advised him to remove the cape from his face, to which the hero did. Saitama's face was smudged with a thick, almost oil like, residue. Even with his scanners, the fluid was enigmatic and completely alien to the cyborg.

"Yes! I'm doing great," he replied sarcastically. "That guy just spit in my face and-shit! It's in my eyes! It's in my eyes!" As he talked, some of the fluid had made it way to his lips and rolled into his mouth. The liquid tasted like a burnt, bitter cookies and the smell of gasoline.

The teen insisted that he clean the remaining sludge. Saitama gave him his cape and let him wipe the secretion from his face. Though Saitama had cleaned off most of the residue off, it concentrated more around his eyes and his mouth.

"It's extremely difficult to wipe off. Sensei, I feel that is necessary to use some saliva to clean off the rest as it will-"

"Do whatever! Just get it off!" He barked.

Seeing that the cape was too dirtied, Genos had ripped out a piece of his own shirt to sanitize the man. He wiped the cloth on his tongue and wiped it along Saitama's eyes and lips. He ripped off more pieces from his shirt as the other ones had dirtied quickly. The stinging sensation had nearly disappeared and he was able to finally open his eyes. A distressed look was on his disciple's face.

"Sensei, do you feel better now?"

"Y-Yeah. I'm good now, thanks." Saitama looked around to find his opponent, only to spot his remains disintegrating into the breeze. "What's his problem anyway?" He muttered to himself. "Well, whatever. He's done for now."

"We should hurry home and wash away the rest of the fluid," he said as he helped his teacher up with his only hand. Genos took a mental note to bring the cape to his doctor to have the residue analyzed.

"Yeah, but I'll probably have to take 5 showers to get the smell off," he groaned. Not to mention that he planned to brush his teeth for 30 minutes to get the taste out of his mouth. "At least it's a good thing I don't have to pay for the water bill."