I, without any personality, become a hero!

"What!!"

Midoriya, who only reacted after being called twice, immediately learned the details of what had just happened from the Grim Reaper, then hung up the communication device and turned to leave.

"Doctor, I need to go out for a bit!"

"Be careful, and remember to bring me a packet of tea when you come back."

"Ok!"

After waving goodbye, Midoriya immediately set off. He needed to head to Z City right away. Although Dr. Kusno's lab was some distance from Z City, it wasn't a major problem.

Midoriya grabbed the steel wire that stretched out from the sky and used a movement style similar to Spider-Man to travel. Since the steel wire that could appear in various places through the "black box" did not have the problem of a point of force, using this combination of "Quirks" was not only convenient for fighting, but also very useful for traveling.

The "hair growth serum" I made turned me into a weirdo?!

Midoriya was somewhat anxious and worried about this situation. He heard from the Grim Reaper that the guy had attacked both him and Saitama together, and it seemed to be specifically targeting people with the "bald" attribute. He hoped that nothing dangerous would happen during this time.

Meanwhile, Saitama caught up with the "Hair Growth Potion Monster" in no time, but he still felt a terrible headache. This guy was just like that "Hell Monster"... his abilities were so weird and disgusting!

Every time Saitama tries to kill the "Hair Growth Potion Monster" with one punch, it can sense the danger in advance and cover itself with bubbles. By the time Saitama disperses the bubbles, the "Hair Growth Potion Monster" has already appeared in another place.

Although Saitama could use a wide-range, powerful attack to instantly kill it, he and the "Hair Growth Potion Monster" are located in Z-City, and using an extremely powerful attack would definitely harm the residents of Z-City.

"You bastard, stop right there!"

Saitama was about to deliver another punch, but the "hair growth agent monster" prematurely transformed into a bubble and reappeared in another distant location. Saitama suddenly felt a little tempted to just use an area-of-effect punch to instantly kill it.

"Teacher, we're here to help!"

Genos's voice came from behind. He and the Grim Reaper had just arrived from Saitama's house and immediately stepped in to help when they saw the situation.

Genos, using his thrusters to rush forward, unleashed a low-powered "Incineration Cannon" from his hand, controlling it to a level that wouldn't harm the surroundings while still being extremely lethal. Believing that the flames would still be effective at damaging hair, Genos launched an attack.

The "Incineration Cannon" erupted from the mechanical arm, while the black hair on the "Hair Growth Monster" tangled and coiled like a water snake, not only blocking Genos's "Incineration Cannon" attack but also wrapping around his legs, sending Genos flying and crashing into a nearby building.

"Jenos, are you alright?"

"Damn it, I was careless!"

Saitama called out with concern, and Genos, looking disheveled and exhausted, pushed away the rubble and stones pressing down on him and said to himself with self-reproach.

Genos only noticed that the "hair growth monster's" hair was wet when the black hair wrapped around his legs, and the unburnt moisture on it blocked his "burning cannon".

"Brother, just surrender!"

Taking over Genos's position, the Hell Messenger lunged at the "Hair Growth Potion Monster." It actually had a good impression of the "Hair Growth Potion Monster," which was also a creation of the Master, but Midoriya had just given it an order.

"Grab it! If you can't catch it, kill it! We can't let it bring disaster to ordinary citizens!"

Because it was his own creation that turned into a monster and went out of control, Izuku Midoriya took the situation very seriously and came to the scene in person. Meanwhile, the Grim Reaper attacked with the idea of ​​capturing the "hair growth agent monster".

The Grim Reaper was about to pounce on the "Hair Growth Potion Monster" when it encountered the same situation as Saitama. The guy in front of it vanished after turning into bubbles, but at that moment, the Grim Reaper noticed a voice coming from behind it.

"Die, you bald man!!"

A blade made of black hair pierced through the body of the Hell Messenger. The "Hair Growth Potion Monster" appeared behind it in a bubble form and delivered a fatal blow to the "bald man" it hated.

Incidentally, the Grim Reaper has a jet-black bald head, similar to Saitama's "bald" type.

Chapter 12 "Hair Growth Tonic" (Part 2)

"Hell's Monster!"

In Saitama's eyes, the Grim Reaper's body fell limply to the ground, and the culprit who caused all of this was that despicable "Hair Growth Potion Monster".

"You bastard, you actually killed your brother 'Hell Monster'!"

"Baldy! All bald men must die!!"

Faced with Saitama's accusations, the "Hair Growth Potion Monster" roared wildly, seemingly devoid of any rationality. Saitama wouldn't let this despicable monster continue its rampage, but currently, Saitama had no good way to break through the monster's bubble-like transformation.

"No, it seems we have no choice but to kill it."

"Hey! Didn't you just die?"

"I'm alive again!"

Looking at the "Hell Monster" that appeared behind him, Saitama was a little surprised that this thing could resurrect so quickly. Its corpse had just landed over there, and it had already resurrected here. This corpse resurrection was too fast, wasn't it?

"Anyway, I'm sorry, brother, but I have to take you down according to Master's orders!"

Although somewhat disappointed by the "hair growth agent monster," the Grim Reaper prioritized Midoriya's orders and, having confirmed that capture was impossible, was determined to eliminate him.

"Feel the immense power bestowed upon me by my master!"

The powerful move used by the Hell Messenger during its battle against the Asura Rhinoceros Beetle instantly killed the Asura Rhinoceros Beetle, whose strength and speed far surpassed its own. This is the terrifying power of the Devourer.

Black mist appeared out of nowhere and surrounded the "Hair Growth Potion Monster". Saitama was curious about the "Hell Monster's" special technique, so he watched quietly from the side. Genos, who also knew how terrifying this move was, was full of confidence in the "Hell Monster".

However, as the black mist dissipated, the "hair growth serum monster" was completely unharmed...

"Um...were you performing a magic trick just now?"

Saitama poked the Grim Reaper's back and asked the guy curiously, "Your seemingly powerful attack just now had no effect at all."

"It's... broken!"

Genos was utterly astonished. He had personally witnessed the "Hell Monster" use this move to instantly kill the Asura Rhinoceros Beetle, yet it had absolutely no effect on the "Hair Growth Potion Monster"?!

"Damn it... It's not a living being, so my special move only works on living beings."

The Hell Messenger is in a slightly awkward position. Its abilities can be said to be at the top of the biological world. Its powerful special moves can even kill the Asura Rhinoceros Beetle in one hit. However, its biggest drawback is that it is completely ineffective against non-living things.

This means that if the Grim Reaper were to fight Genos, aside from using brute force to defeat Genos, its special abilities would be ineffective against Genos, who is a cyborg.

"Okay! Let me do it!!"

Saitama, who vanished instantly and reappeared in front of the "hair growth agent monster," unleashed a lightning-fast punch. However, as a burst of bubbles dissipated, the monster disappeared once more.

"Damn it! It got away again!"

Saitama, who had failed even with his super-speed attack, stubbornly continued to chase the "hair growth agent monster" at super speed, only to find himself surrounded by white foam.

Each of Saitama's attacks shattered a cloud of white foam, but he didn't stop and kept using this method to keep attacking. At one point, Saitama's figure could not be seen at all, and all that could be heard was the sound of fists breaking through the air.

While this situation persisted, a strange change occurred throughout Z City. Ordinary citizens strolling on the streets, whose hair grew rapidly as if it had absorbed a "hair growth agent" after accidentally getting foam on their heads from falling from the sky.

The young man, who had previously had short hair, suddenly grew his hair to the length of the ground, causing the citizens of Z City to exclaim in surprise. This was an anomaly!

At this moment, Midoriya finally arrived in Z-City from Dr. Kuseno's lab. After seeing the Grim Reaper while suspended by steel wires high in the air, he immediately teleported to its side and Genos's side.

"What's going on now!?"

"Is that so..."

The messenger of hell was probably telling his master what had just happened, while Midoriya glanced at Saitama and the "hair growth agent monster" who were nowhere to be seen in the air. The two were engaged in a super-fast battle, and even Midoriya's dynamic vision could only catch a glimpse of them.

Then Midoriya turned his gaze directly to the citizens of Z City. Their hair, covered in white foam, had grown out a lot, making them look like women at first glance.

"After becoming a monster... the 'hair growth serum' became more effective?"

As Izuku Midoriya pondered, the "hair growth serum" he created didn't have such a strong effect. It was clear that his abilities had been greatly enhanced after he became a monster, just like the Grim Reaper's ability to be immortal on the spot.

"Midori, do you know how to break the bubble-like transformation of this 'Hair Growth Potion Monster'?"

Watching Saitama and the "hair growth serum monster" playing a never-ending cat-and-mouse game, Genos could only turn his attention to its creator, the genius scientist Izuku Midoriya.

"What the hell do I know! I just wanted to develop a 'hair growth serum' for Saitama, who knew it could turn into a 'monster'?!"

Midoriya was completely devastated. He had been in contact with the Grim Reaper for quite some time, and he had gradually come to accept its existence. But now he was being told that the "hair growth serum" he had created had turned into monsters. Was this guy trying to mess with him?!

"It seems we can only hope for Saitama-sensei."

Having given up on seeking help from Midoriya, Genos activated his electronic eyes to monitor Saitama and the "Hair Growth Potion Monster's" movements. Now, he could only hope that Saitama would defeat this guy.

The phenomenon of residents in City Z experiencing unusually long hair growth has attracted the attention of some concerned individuals. When it was discovered that the hair growth was caused by the presence of foam, those who did not want their hair to grow into vines promptly hid indoors. However, some people still voluntarily ran out of their rooms.

Bald, penniless, Mediterranean... they are a group of people who are usually troubled by their hair. After discovering this miraculous situation, these people immediately came out to accept the baptism of white foam.

"Hair... hair!"

"It's grown! It's grown again!!"

"A miracle! This is a miracle!!"

People who were shedding tears had spent a lot of money on their hair problems, but after all the hair regrowth methods failed, they were utterly disheartened. But now, the foam falling from the sky brought their hair back to life. It was truly a blessing from the gods!

At this moment, Saitama, who had been chasing and attacking the "hair growth serum monster," stopped. He looked at the people kneeling in the street worshipping the gods, their heads suddenly sprouting full, black hair. Saitama lowered his head and fell silent...

"Why...why can they grow hair, but I can't...?"

"You bald man who gave birth to me! Feel my resentment, die!!"

With Saitama's movements halted, he was riddled with openings, and the "Hair Growth Potion Monster" finally had a chance to kill the "bald man." Its black fur coalesced into a sharp spear, charging towards Saitama.

"Damn it! As long as I can grow hair, that's all that matters!!"

With his rage at maximum, Saitama unleashed a punch comparable to the resentment of the abyss of hell as the "hair growth monster" lunged at him from mid-air.

In an instant, the "hair growth agent monster" completely turned into a bubble and dissipated in mid-air. Midoriya and the others looked in the direction Saitama's punch came from and saw a large hole in the clouds in the sky... It seemed as if a punch had directly pierced through the clouds of the earth.

Brother, may you rest in peace...

The messenger of hell praying with a cross drawn on his chest, although the "hair growth agent monster" is a creature that has not been born with rationality, it is also a brother created by its master.

Chapter 13 Excessive Water

With the "hair growth serum freak" incident over, Izuku Midoriya returned to Dr. Kuseno's research institute to continue his studies, but this time he changed his current plans.

Midoriya originally intended to learn about mechanics while exploring this world, but after his own "hair growth serum" turned into a monster, he had to take the situation very seriously. If he didn't figure out the root cause of the "monsterization" as soon as possible... and if the same thing happened again, and it produced irrational "monsters"... it would probably bring great disasters to ordinary people.

Therefore, Midoriya put aside his own affairs for the time being and first made a statistical plan based on the intelligence information he knew.

"According to the 'Hell Messenger' and intelligence gathered from various sources, the biggest commonality among those who have become 'monsters' in this world is..."

"When a person or thing possesses strong 'emotions' and 'obsessions'..."

Midoriya flipped through the stack of documents in front of him. He had asked Dr. Genus, the "takoyaki shop owner," to collect them for him. After the Grim Reaper kidnapped the bespectacled doctor last time, Midoriya officially got to know him and they were now good partners in studying biology.

Judging from the monster transformations of "Hell Messenger" and "Hair Growth Potion," this similarity is undeniable, and...

Midoriya looked at the photos in his hand; it was a picture of a "vending machine monster" wantonly snatching and swallowing the wallets of passersby.

"It's not uncommon for inanimate objects to 'monsterize' and become living beings."

What is illogical in Midoriya's original world is perfectly normal in this world, which is why there are so many monsters to fight.

"However, it seems certain conditions are still required... 'Emotion' and 'obsession' only act as catalysts; the most important thing is possessing the potential to 'become a monster.'"

"Otherwise, if strong emotions alone could transform someone into a 'freak,' then probably every ordinary person in this world would have become a freak long ago."

After roughly researching and analyzing the conditions for "monsterization," Izuku Midoriya turned his attention to another pile of documents.

"The Hero Association... exists in this world in a similar way to the organization in my original world, but for this world, the Hero Association is indeed an indispensable entity."

This world is full of monsters. If there weren't a large number of heroes to fight against them, countless people would probably lose their lives at their hands.

Although Midoriya was completely absorbed in learning about mechanical technology during this time, he did not forget to collect relevant information about this world, even though he sent the Grim Reaper to collect the information.

"The level of the weirdo..."

God: A crisis that could lead to the extinction of humanity;

Dragon: A crisis that could lead to the destruction of several towns;

Ghosts: A crisis that could paralyze or even destroy a town;

Tiger: A potential crisis that could cause casualties;

Wolf: A dangerous factor has emerged.

The Hero Association has made a very detailed classification of the disaster level of monsters. This disaster level does not necessarily refer to monsters, but may also be a corresponding natural disaster crisis. The specific disaster situation is determined by the Hero Association.

This detailed differentiation is also to facilitate the classification of heroes by rank and level and the rational allocation of tasks.

C-level heroes correspond to "Wolf-level"; B-level heroes correspond to "Tiger-level"; A-level heroes correspond to "Ghost-level"; S-level heroes correspond to "Dragon-level"... As for "God-level", this is a disaster level that would wipe out all of humanity, requiring all those with power to mobilize to fight against it.

Incidentally, "Hellbringer" is labeled a "Dragon-level" monster by the Hero Association, mainly because even the second-ranked S-class hero "Tornado of Terror" suffered a defeat. "Hellbringer" is also the first monster to make the Hero Association suffer a setback.

"However, according to that Hell Messenger guy, that S-class hero ranked second, 'Tornado of Terror,' is also quite powerful. Only Saitama could have killed and resurrected her so many times."

Although the Grim Reaper doesn't use its terrifying destructive abilities because the opponent is human, it is a monster that can fight against the "Asura Rhinoceros Beetle" in its normal state with brute force alone, and it has killed it so many times without it being able to fight back... The second-ranked S-class hero is also very powerful.

"Speaking of which, Genos is ranked 17th among S-class heroes, right?"