I, without any personality, become a hero!

"Young man, are you interested in joining the Hero Association and becoming an S-class hero?"

On behalf of the Hero Association's higher-ups, Bang brought up the matter directly to Izuku Midoriya.

"A hero, huh...?"

The old man's words slightly affected Izuku Midoriya, leaving him with a slight psychological scar. Although the world does need heroes to eliminate monsters, Midoriya couldn't accept it for personal reasons.

"Sorry... I'm interested in being a scientist, being a hero is out of the question..."

"I see... That's such a shame."

Midoriya's answer was exactly what Bang expected. If this young man truly wanted to become a hero, he would have already reported to the Hero Association. The rest was up to fate...

Finally, a total of four people from the barbecue restaurant had a meal together.

Chapter 16 "Monsterization"

Three days passed quickly after the giant meteorite incident, and Genos rose from 17th to 16th in the S-class hero rankings, while Saitama rose from 342nd to 5th in the C-class hero rankings... Although this might seem insignificant to outsiders, Saitama himself was very happy.

Meanwhile, the existence of Izuku Midoriya was officially learned by the Hero Association. After all, the meteorite fragments that were stuck in the sky were witnessed by everyone in Z-City. In fact, the higher-ups of the Hero Association attributed the credit for destroying the meteorite to him.

Having created the "Hell Monster" with an immortal body and possessing powerful unknown abilities, Midoriya has attracted the attention of the Hero Association. After a quick discussion among the higher-ups, they decided to invite Midoriya to join the Hero Association and become an S-class hero.

However, since the Hero Association failed to persuade Bang (Silver Fang) to make Izuku Midoriya an S-class hero, they can only list Midoriya as a key person under observation for the time being. If there is any hope, they still want to invite him to become an S-class hero.

There's no need to go into these unnecessary details. Izuku Midoriya's own experiment has entered a critical moment, and he is actively researching the birth of "monsterization".

Judging from the cases of "Hell Messenger" and "Hair Growth Serum" turning into monsters, they both possess considerable special abilities. "Hell Messenger" goes without saying... it was originally an important weapon that Midoriya prepared to use to end the battle with the pro heroes, but unfortunately it was sent to this world by "13" teacher's black hole.

As for the "hair growth serum"... this is a super-effective new type of "hair growth drug" that Midoriya developed by combining Dr. Genus's research data. If used on ordinary baldness, this drug can instantly grow hair, but unfortunately it failed on Saitama...

In the end, Midoriya came to a conclusion that all the creations he made that conformed to his common sense had failed on Saitama and generated strong feelings of resentment, thus giving birth to "monsters".

Then the rest was very simple: Izuku Midoriya began his first proactive action in this world.

Izuku Midoriya and the Grim Reaper arrived at a residence on the outskirts of Z City, the address of Saitama's family... a dangerous area rumored to be frequented by the "King of Monsters".

This was Midoriya's second visit to Saitama's home. Led by the Grim Reaper, they arrived at the door of an ordinary house, where Midoriya Izuku knocked.

"Oh, it's you! Welcome!"

The person who opened the door was Genos. He was wearing an apron and was probably preparing lunch. Midoriya took off his shoes and entered the door, and immediately asked him about the main target he had come to see.

"Isn't Mr. Saitama home?"

"The teacher went out on patrol and went to the supermarket to buy groceries on the way."

"Hey, weren't you cooking?"

"It's the seaweed we didn't finish last time. I don't know what kind it is. It needs to be stewed for a long time before it's ready to eat, and it hasn't spoiled even after being left for a long time."

"Is that so...?"

Without asking too many questions, Midoriya naturally squatted down to the side and waited for Saitama to come home, while the Grim Reaper was rather impatient and began to question Midoriya Izuku.

"Master, will I have a new brother this time? Will he be as irrational as the last one?!"

"I don't know the specific outcome either, which is why I came to find Mr. Saitama."

Having reassured himself that he had asked Saitama to help him with his experiments, Midoriya figured that if a mindless being like the "hair growth agent monster" were to actually be created, it would be convenient to just eliminate it on the spot... after all, Saitama is really strong.

Not long after, the door to Saitama's house was opened, and a bald-headed man with a reflective bald head poked his head in and noticed the two unexpected guests.

"Oh, it's you guys?!"

Saitama brought home the vegetables and meat he had just bought, hoping to treat himself to something nice, but unexpectedly, guests arrived today... Was it just a coincidence or an inopportune one?

"Excuse me, Mr. Saitama! I've come here specifically to ask you for a favor."

Midoriya cut to the chase, stating his purpose directly. Saitama, somewhat puzzled, scratched his bald head. After handing the meat and vegetables he had bought to Genos, he sat down opposite Midoriya, nodded, and asked:

"What's wrong? I'll do my best to help if I can."

"That's great!"

After hearing Saitama's agreement, Midoriya pulled a bottle of green potion from his pocket. This was a dangerous substance he had concocted some time ago... Back then, the Grim Reaper almost made him drop it and cause a major incident.

"what is this?"

Saitama pointed to the green potion in Midoriya's hand and asked him about it. Midoriya Izuku then explained the item and the favor he had asked Saitama to him.

"Because I've been bothered by the 'hair growth serum' turning me into a monster last time, I've specially created a new item to figure out the essence of 'monsterization.' I hope Mr. Saitama can help me conduct an experiment on 'monsterization.'"

Feeling uneasy under Midoriya's intense gaze, Saitama regretted agreeing without asking any questions. However, it seemed he had no choice but to cooperate with Midoriya Izuku and become his guinea pig for experiments.

"Okay... what should I do...?"

Saitama surrendered and resigned himself to his fate, while Izuku Midoriya stood up apologetically and bowed to Saitama, as the matter had involved a slight element of his willfulness.

"I adopted the specific circumstances of the 'Hell Messenger's' birth, and this time I've created the same diffused mist substance. Mr. Saitama, you'll need to smash this vial at your feet to experience its effects."

"Then let's get started quickly. Genos's meal will be ready by the time we finish the experiment."

Saitama agreed to help Midoriya with his experiments without much hesitation. They went to the outskirts of Z City, a deserted area with only abandoned buildings, perfect for conducting experiments.

"Mr. Saitama, thank you for your help!"

From a great distance, Izuku Midoriya shouted to Saitama, "This isn't the type of weapon that spreads violently. Standing far enough away is a safe zone."

However, there's a reason why Midoriya is so cowardly. Even he himself is terrified of the potion he created. Although it's not a life-threatening substance, getting even a little bit of it is enough to make a person suffer.

"Okay... I hope no more weirdos will show up and cause me trouble..."

Thinking about the indestructible "Hell Monster" and the "Hair Growth Potion Monster" who had mocked him to the point of near stroke, Saitama realized that all the monsters he had defeated... combined, were still less troublesome than the single problem created by Izuku Midoriya. It was enough to give him a headache.

As Midoriya Izuku made the OK sign from afar, Saitama let go of his hand... The green vial in his hand fell directly to the ground, and the green vial immediately evaporated upon contact with the air, turning into a thick green mist that enveloped Saitama.

Midoriya held his breath and observed and recorded... 1 second... 2 seconds... 3 seconds... After silently counting to 10 seconds, Saitama himself emerged unharmed from the green mist. Just when Midoriya Izuku thought his experiment had failed... another incident occurred!

The green mist began to pulsate with life; this was "monsterization"!

Chapter 17 Epidemic

When Saitama turned around, the green mist that had been spreading in the air contracted and gathered together, just like the phenomenon when the "Hell Messenger" was born as a monster. The green mist condensed into a ball and created a tornado.

This time, Izuku Midoriya was present, and he could perceive everything happening before his eyes more clearly. After the green mist formed a tornado in the air... In this world, it seemed as if some unknown entity was gathered together, and in an instant, the green tornado stopped and dissipated.

Thus, the "weirdo" was born!

A giant scythe of death was hooked around Saitama's neck, while in front of Izuku Midoriya was a strange man covered by a green cloak, but when he pulled up the hood, the place where his head was was an empty void.

"Oh? He really has become a weirdo!"

Saitama remained unmoved even with the giant weapon clamped around his neck; instead, he stared with great curiosity at the green-cloaked monster before him. After all, this guy was something Izuku Midoriya had actively experimented with and created.

"Um... could you please stop?!"

Izuku Midoriya quickly moved closer and hurriedly said something to both the newly born green-cloaked monster and Saitama, as it would be a great loss if Saitama killed the newly born monster with a single punch.

It seemed that Midoriya's command had taken effect; the green-cloaked monster retracted its Grim Reaper scythe and then knelt down in front of the approaching Midoriya Izuku.

"Master... my name is..."

"A name?"

Midoriya thought about it carefully and realized that he hadn't given the "monsterization" experiment a proper name. Judging from the current behavior of this green-cloaked monster, it should be a creation that obeys his orders, just like the Grim Reaper.

"Your original form was 'Plague Messenger,' but based on Dr. Genus's research, I've enhanced its effects. Your current name should be 'Plague Messenger.'"

“I…the Plague Bringer…”

Having officially received its name, "Plague Messenger," it stood up and faced Saitama once more, its massive scythe of death staring hostilely at him. A terrifying voice from the valley spoke haltingly:

"The plague cannot infect... hostile targets... must be eliminated..."

"Brother, I support you! Let's defeat this 'bald guy' together!"

The hellish messenger leaped out and roared in unison, only to be blasted into ashes by a fist and vanish into nothingness...

"Shut up! You black bald head!!"

The overconfident Grim Reaper touched Saitama's sore spot and was immediately taught a lesson about how to be a low-key monster with a punch; meanwhile, Izuku Midoriya quickly stopped the Plague Messenger's actions, as he didn't want the monster he had just created to go looking for trouble with Saitama.

In summary, although there were many unclear factors in this "monsterization" experiment, the result was a great success in creating the "Plague Messenger".

"Speaking of which, this new monster you created doesn't seem to have a face, does it?"

Saitama pointed curiously at the Plague Messenger, describing it as a strange figure covered in a green cloak, resembling the Grim Reaper from Western mythology and wielding a giant scythe. However, its arms and torso were tightly bound with greenish bandages, while its head was half-covered by a hood, leaving only a completely black void where its face was visible, like a black hole...

"I'm ashamed too, isn't that strange?"

The newly resurrected Grim Reaper answered Saitama's question. Its head was also bald and completely dark, resembling a large glass ball.

"Go away, get out of here! Just looking at your face annoys me!"

Saitama shooed away flies with disgust, looking at the Grim Reaper's jet-black bald head. The guy's mirror-like bald head reflected Saitama's own head, so Saitama disliked this guy in every way.

"I...spirit...material manifestation...."

The Plague Messenger answered his questions about his true nature in fits and starts. Izuku Midoriya immediately understood what was going on, while Saitama, unable to comprehend the meaning of these terms, didn't bother to dwell on it.

"Let's go home first. Genos's meal should be ready by now."

Saitama turned around and went back to his own home first, and Midoriya followed with his two monsters. After all, he needed to trouble Genos to register him with the Hero Association in order to avoid any misunderstandings.

When they arrived at Saitama's house, the Grim Reaper and Midoriya also happened to be there for a meal. Although Genos was somewhat surprised by the newly appeared "Plague Reaper," he had seen a lot recently and was no longer surprised.

"Aren't you going to eat with us?"

Saitama, who was about to start eating lunch, greeted the Plague Messenger who was leaning against the wall. Although this guy was a newly born monster who was hostile to him, Saitama usually didn't care about the details of such things.

"I...don't need to eat..."

The plague messenger, which responds intermittently, is essentially a spirit-like being, completely devoid of any need for food.

"That's right, let's eat!"

The impatient messenger of hell had just picked up his chopsticks and grabbed a piece of meat when Saitama snatched it from his hand with even greater speed.

"What nonsense are you talking about? You don't need to eat either! Why are you coming to my house to freeload?!"

The Grim Reaper hadn't mentioned it before, but it reminded Saitama that the "Hell Monster" was also a monster who didn't need to eat, and this guy had the audacity to sit on his family's dining table.

"What does it matter? I need to replenish my energy from various sources anyway, so isn't it more efficient to get it from food?"

The Grim Reaper, while talking, kept piling food into his bowl, prompting Saitama to immediately start piling food into his own bowl as well. At the same time, he retorted righteously:

"Why don't you just study plants properly and learn about photosynthesis?!"

"No, I will steal your food to further weaken your strength, and then carry out my plan to defeat you completely."

"Hiss!... You wretched freak!!"

............

The fight over the food at the dinner table was quite intense, but it was just normal playful banter, and Saitama didn't get angry and kick the Grim Reaper out of his house.

Finally, when Izuku Midoriya was leaving, he asked Genos to go to the Hero Association to file a report on the "Plaguebringer." He didn't want to be surrounded and attacked by a bunch of S-class heroes. After all, Izuku didn't want to cause too much trouble for the world.

"Let's go back. It's time to proceed with the next step of the experiment."

Izuku Midoriya returns to Dr. Kuseno's research institute, and his team has been expanded to include a new monster, "Plague Messenger".

Chapter 18 Plague

The busy research did not stop. There were too many unknown reasons for the "monsterization". On the one hand, Izuku Midoriya stepped up his research on the analysis of his own experimental results, and on the other hand, he directly issued orders to the Grim Reaper.

"The 'Plague Messenger' is in your care now. The main thing is to ensure he doesn't cause trouble for others."

"Understood, my master!"

Midoriya himself doesn't have much free time. He's currently overwhelmed with analysis and research on various aspects, and as for the strange "Plague Messenger" that he created, he can only let Hell Messenger keep an eye on it for now... Judging from the current situation, it seems that Hell Messenger is the only one who can lead it.

After being entrusted with an important task by his master, the Hellbringer excitedly ran up to the Plaguebringer and said smugly:

"Come on, brother! I'll take you to Z City to familiarize yourself with the area."

The Plague Messenger, who had been leaning against the corner like a withered tree, picked up the Grim Reaper's scythe after hearing the words of the Hell Messenger and silently followed behind its nominal elder brother.

The Hell Messenger arrived in Z City shortly afterward. Ordinary citizens didn't react much when they saw it, since it was common for "Hell Monsters" to appear in Z City, and it didn't bring any disasters; in fact, it would help people in distress.

However, today, the "Hell Monster" was followed by a strange man in a green cloak wielding a scythe. Ordinary citizens were still somewhat afraid and kept their distance from them, wondering if this newly appeared monster would bring disaster.